chuyển  câu chủ động sang câu bị động ở thì hiện tại tiếp diễn:
1.they are studying English in the classroom
2.A cat is chasing after a mouse
3.the boy is watering some trees in the garden
4.he isn't washing his car
5.my mother is cooking meal at the time
6.the workers are painting the house now
7.the students are doing exercises on passive forms
8.Lan isn't reading books at the moment
9What are you doing at the moment ?
10.Is Tom making a toy now ?
11. Are the workers building the school now?
12.What is the teacher writing on the board ?