A/
I/
1.A
2.D
II/
3.A
4.B
5.She learn English every morning before going to school.
→learns
6.Please don’t make noise. The baby is sleep in the room upstairs.
→sleeping
7.This is the second time I have watch this movie.
→watched
IV/
8.D
9.D
10.B
11.B
12.D
13.C
14.C
15.D
V/
16.Because has a bag leg,he walks slowly.
17.Mr.Brown used to work for a media company,ut now he runs his own company.
18.If John lived in the area affected by air pollution,he would have breathing problem.
19.If you stop swimming in this lake,you won't have skin rashes.
20.Phong hasn’t visited Tasmania for five years.
Chúc bạn học tốt ^_^!!!
(Nếu thấy hay hãy vote 5*,cảm ơn và bình chọn là câu trả lời hay nhất để mik có động lực giải tiếp các BT khác nhé!)