I. Chuyển các câu sau sang câu bị động
a. Minh is cleaning his room now.
b. They often drink beer in the afternoon.
c. My mother bought some books yesterday.
d. He has made a birthday cake for 2 hours.
e. We needs to brush our teeth everyday.
f. I can draw pictures very well.
Minh's room is cleaned now.
Beer often drunk in the afternoon by them.
Some books were bought yesterday by my mother.
A birthday cake has made for 2 hours by his
Our teeth need to brush everyday by us.
Pictures can draw very well by me