1. While I was sleeping, I heard a loud noise.

2. We were shocked when we heard the news.

3. Before my father leaves for work, he feeds the dogs and cats.  

4. After I finish my homework, I hang out with my friends.

1. She was surprised when found a golden coin in the garden.

2. I will go shopping as soon as I find my wallet.

3. He made a quick phone call to a client before he left the office.

4. He took a rest after he mowed the lawn.

a) Để y = f(x) = \(\frac{2}{\left|x\right|-2}\) xác định thì \(\left|x\right|-2\) \(\ne\) 0
=> \(\left|x\right|\) \(\ne\) 2
=>\(\begin{cases}x\ne2\\ x\ne-2\end{cases}\)
b) \(\frac{1}{2-x}+\frac{1}{x+3}=\frac{x+3}{\left(2-x\right)\left(x+3\right)}+\frac{2-x}{\left(2-x\right)\left(x+3\right)}=\frac{x+3+2-x}{2x-x^2+6-3x}=\frac{5}{-x^2-x+6}=\frac{5}{\left(2-x\right)\left(x+3\right)}\)
Để y = f(x) = \(\frac{5}{\left(2-x\right)\left(x+3\right)}\) thì \(\left(2-x\right)\left(x+3\right)\) \(\ne\) 0
=>\(\begin{cases}2-x=0\Rightarrow x\ne2\\ x+3\ne0\Rightarrow x\ne-3\end{cases}\)

"Chúc mừng, bạn đã bị lừa đảo!"? Là sao?

Everyone may know about the countryside, everyone have their own opinion on it too. So today, i will tell you about what i think about the countryside! First, always the positive! It has a low cost of living and has more fresh air than the city, it also has more green spaces and hospitable people! But, for the negative, it has poor means of transport and not so much zoos or parks also for school and also for modern facilities, but none of them are my problem! Still, it just only my opinions, what do you think is your own, i can't change your mind.

Online learning has a lot of advantages in today’s world. One big benefit is that it is very convenient. Students can study at home, in a café, or anywhere with internet access. It is also more comfortable because they do not have to wake up too early or travel long distances to school. Another advantage is the freedom it gives. Students can manage their own time and learn at their own pace. This helps them become more independent and responsible for their studies.

Hi, Tom!
I heard you are about to join in the Ok Om Bok Festival. I has no idea what it's about but i just search it on google and i has some advice for you! First, dress up like a homeless man for the Moon God offering ceremony! Haha, just kidding, dress as good as you can for the Moon God offering ceremony. Stay loud when there're elders are talking! I mean stay quite. And just make sure to respect to the monks and elders... You need to littler the temple ground if you want to get yourself kicked and banned! Here the other way to get yourself kicked and banned, refuse young rice when thee elders offer it to you! And most of all, never touch the statues in the temple ground, otherwise the cops will come! That's all i know! Hope it's useful for you.
Your friend.
.̶̦͈̰͚̰̿͗̌͊ (I use someone's olm display name)

tên bro kì vậy... nó phá luôn khung ảnh đại diện r XD

Chúc bạn thi tốt nhé!

WHAT THE???