Chuyển sang nghi vấn và phủ định
1. Nam often does homework carefully
2. They sometimes go home late
3.She is cooking dinner now
4. He is a teacher
5.Lan called last night
6.Hoa has a brother
7.We will be in class 6 next year
8.They did this work 2 day ago
9.They do gardening at this time
10.They do gardening at this time yesterday
11.She will go home tomorrow
12.They always get up early