Question

[Lê Nguyễn Hà Phương]

Chuyển sang câu bị động:

1. We must obey traffic rules strictly to reduce traffic accidents.

2. I should do everything well before the exam.

3. You shouldn't use much sugar in your diets. 

4. I could draw posters for decorating streets.

Answer 1

[Nguyễn Đoàn Dương]

công thức: S1+ ĐT khuyết thiếu+be+Vp2+[by+S2]+O

Answer 2

[:3]

1.Traffic rules must be obeyed strictly to reduce traffic accidents (by us).

2.Everything should be done well by me before the exam.

3. Sugar shouldn't be used too much in your diets.

4. Posters could be drawn for decorating streets by me.