--- Can you play tennis with us now?--- _____. I have to finish my homework first.
---Relax. Don’t work today. Just ______. ---Thanks a lot.
I don’t think one country can solve the problem of pollution alone, _______?
--- Have you finished all your homework?--- Of course. I ______ it before I went out to play football.
Shangri-la, a place of mystery and beauty, is indeed a heavenly world ______ people live in.
---You are confident about passing the coming test, aren’t you?---______. I’m well prepared and feel I will make it.