31. The train ______ half an hour ago. A. has been leaving​B. left​C. has left​D. had left 32.The number of competitors who take part in the Olympic Games increases every year. A. participate in ​B. happen ​C. take place​ D. accept 33. Jim_______ to his girlfriend on the phone when I_______ in. A. talked / came​ ​B. talked / was coming ​ C. was talking / was coming ​D. was talking / came 34. Mary is a humorous girl. She always makes me……….. A. laughed ​B. to laugh ​C. laughing ​ D. Laugh 35.Christopher Columbus _________ American more than 500 years ago. A. discovered​B. has discovered​ C. had discovered​ D. had been discovering 36.If you only care about your interests and feelings, you are very ---------------------. A loyal​B friendly​C selfish​D happy​ 37.Each nation has many people who__________ take care of others. A. volunteered​B.voluntarily​C. volunteers​D. voluntary 38.Teenagers nowadays often have their own __________ who they really love and imitate in different ways. A. idol​B.singer​C.person​D.crush​ 39. The wedding party _______ held at the Rex Hotel now. A. is​B. is being​C. will be​D. is going to be 40.The doctor advised _______ late. A. me not staying up ​B. me not stay up C. me not to stay up D. I did not stay up 41.Where is Mary? – She _________ for the dinner in the kitchen at the present. ​A. prepares​B. prepared​C. is preparing​D. has prepared 42. Since _______, I have heard nothing from him. A. he had left ​B. he left​C. he has left​D. he was left III. Put the words in the correct Tenses:(1đ) 1.After he (have)…………………….breakfast, he went to work yesterday. 2. Don’t waste her time …………………….(complain) about her salary. 3. My car needs (repair)………………………………. 4.I saw the thief (steal) ………………………..the bycicle.

word form

walking is a fun easy and ....................... activity EXPENSIVE

some of the ........of computer games as young á 14 or 15 INVENT

one of them is .................. for fun WALK

the number of ...... increases every week PARTICIPATE

members...........near the school volunteer to take a walk instead of riding a motorbike LIVE

VII. Supply the correct form of the words in capital

1. _____________, he has just had an accident (Luck)

2. They plant many trees along the roads to make shade and to _________ the city (beauty)

3. Sorry about the mistakes, I ______________ the instructions you gave me (understand)

4. Since this is the first time you own a computer, do you mind if I give you some _________ ? (advise)

5. The number of ________ increases every week (participate)

III.WORD FORMS: When swimming, we should listen to the pool lifeguards _______ (careful) Nowadays, there are many ______ sport activities after school (differ) The number of _____ in this game is increasing every week (participate) There are no _______ between my answer and his (differ) We encourage students to ________ in the English speaking contest (participant) You must be (care)______ when you cross the street. 1. If the sea level rises, some countries will ____________ (appear) 2. I really feel ___________ __ when I have a high temperature (health) 3. I have an _____________ with my dentist at 8 o’clock. (appoint) 4. When swimming, we should listen to the pool lifeguards ______________ _____ (careful) IV. TRANSFORMATION: 1.She likes going shopping better than watching TV. She prefers ......................................................................... 2.She likes staying at home more than going out. She prefers .........................................................................  3.They prefer going shopping to playing volleyball. They like..................................................................................................................... 4.We prefer walking to driving. We like..................................................................................................................... 5. He prefers golf to tennis.  He likes ............................................................................. 6. My father is a careful driver. My father............................... 7. My brother plays soccer very well. My brother is.................... 8. Children should spend a little time on playing video games. Children shouldn’t ...................... 9. Lan is interested in watching TV and her sisters are, too. => Lan ______________________________________________________- 10. We prefer paying by credit card to paying in cash. =>We like
 __________________________________________________. 11. It took me twenty minutes to travel to the gas station. I spent ............................... 12. My sister plays badminton well. My sister is a.................................. 13. We can ride a horse. They can ride a horse. =>We__________________________________________________________. 14. Deep fried food is not good. Junk food is not good =>Deep fried_______________________ 15.My sister is a very good student. →My sister ………………………………………………………………………………… He swims very skillfully. →He is…………………………………………………. His cousin runs very fast. →His cousin is……………………………………………. Mr. Pike plays tennis very well. →Mr.Pike is…………………………………… These boys dance very beautifully. →These boys are……………………………… You shouldn’t stay up late, it’s not good for your health. →You ought……………………………………… You should do exercise regularly. →Youought…………………………

with/ the/ increases/ amount/ number/ The/ of/ of/ with/ prize-money/ questions.

- hydroeletric   - solar   - electricity    - energy     -Geothermal

  As the number of people in the world increases, the demand for energy increases. To meet this demand, many countries are turning to renewable energy. In Iceland, there are lot of active volcanoes which produce heat.(1)________ energy plants turn this heat into (2)________ and heating power. 

  In South America, they use water to produce electricity. The Itapu Dam is a powerful (3)________ dam 

  In Morocco, they are building a large (4)________ power plant which will use the powerful desert sun to get (5)_______