—Peter, do you know if David _________us in the fashion show this Sunday?—I’m sure if he _________his homework, he will join us.
We’d better ____ out .It’s going to rain.A. not to go B. don’t go C. not go
Shanghai is a beautiful city. I _____ there twice .A. went B. have gone C. have been
He used ___ in the morning , but now he gets used _____ after supper.A to study, studyingB. to study, to studyingC. to studying , to study
The naughty boy stopped ____ when the teacher went away.A. play B. to play C. playing
I don’t think it is a good idea, ________ ?A. isn’t it B. is it C. do we