1. What can we do to reduce traffic congestion in big cities?

3. Is it → It is

4. I think it's time to do something to reduce traffic jams in Vietnam.

5. go on foot to school → go to school on foot

6. There are often traffic jams in the city center in rush hour.

7. People in the past didn't use to worry about traffic congestion.

8. It is compulsory to wear a helmet when riding a motorbike in Vietnam.

Câu 2 bạn làm đúng rồi đó =)))

$\text{@Star}$

$1$. What can we do to reduce traffic congestion in big cities?

$2$. Đúng rồi nha

$3$. It is not far from my house to school ( It is chứ ko phải Is it nhé)

$4$. I think it's time to do something to reduce traffic jams in Vietnam.

$5$. Mai used to go to school on foot when she was in primary school.

$6$. There are often traffic jams in the city centre in rush hour.

$7$. People didn't use to worry about traffic congestion in the past.

$8$. It's compulsory to wear a helmet when riding a motorbike in Vietnam.

`Nocopy` ( một số câu sai mik sửa luôn)