To save energy at school, I always turn off the lights and fans before leaving the classroom. I also make sure to shut down computers after use and use natural light whenever possible. I do these things every day to build a good habit. These actions are important because they reduce electricity waste, save money for the school, and help protect our environment from climate change.

1. Students should use online resources for learning.

2. Although she didn't speak English well, she traveled alone to the UK.

1. The students are doing their science experiment in the lab now.

2. Space travel will become affordable for everyone in the future.

3. You shouldn't stay late to watch TV programmes.

1. Despite having a low budget, the film was still a success.

2. You must not throw trash out of your car window in traffic.

3. The food at this stall is less delicious than the food at that one.

4. We don't have enough notebooks for the students.

1. I think we will travel by hyperloop in the future.

2. Traffic in big cities is often worse than in small towns.

3. Are there usually special activities for children at festivals?

1. Motorbike taxis, called 'xe om' are popular for short trips.

2. People can watch films on streaming services like Netflix.

3. Waterfalls and rivers are natural sources of hydropower.