Jim _______ ride to school. But now he _______ walking to school because he wants to keep fit.
The teacher asked the students _________________.
---Mum,_______ I watch TV? ---No. Unless your homework _______________.
---When did you return to China? ---_________________.
The rain has stopped. Why not ___________ the raincoat?
The book is_____________ interesting __________ I can’t even drop it for a minute.