#no_copy!

@Mưa~

@xin 5*+ 1 cảm ơn+ ctlhn nghen~

@Chúc bạn học tốt~

IV.

33. Don't waste water and electicity, please!

34. Does air pollution cause breaking problems?

35. There will be less air pollution if people cycle more.

36. You can save energy by turning off all the lights when going out.

37. You should not stay up late.

38. If you practice English often, you can improve it.

39. If you study hard, you will pass the exam.

40. Unless he works hard, he will lose his job.

*Reorder the words...

- Don't waste electricity and water, please!

- Does air pollution cause breathing problems?

- There will be less air pollution if more people cycle.

- you can save energy by turning off the lights when going out.

* Rewwrite  the sentences

- You should not get up late.

- If you practice English often, you will be able to improve it.

- If you study hard, you will pass the exam.

- Unless he work hard, he won't lose his job