1 has lived

2 has learnt

3 have worked

4 have/hidden

5 have painted

6 have/waited

7 has taught

8 has sat

1.The roads of Vietnam are too narrow to travel easily.

2.How far is it from your house to the bookstore?

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

4.It is very important to obey the traffic rules when using the road.

chỉ lm đc đến câu 4 thoai