$1$. 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)
