Chuck will go swimming with us tomorrow afternoon _______he can finish his homework by then.
A. so B. but C. if D. or
I need some nice photos for the photo competition so I'll go out to ________the new camera.
A. take up B. try out
C. give up D. take part in
I don't think ________is possible for us to get a taxi at this time of day.
A. it B. that
C. there D. this
—Must I finish my homework first，Mum?
—Yes，you________ do anything else before you finish it.
A. may B. should
C. can't D. needn't
While his dad ________ out，Steve decided to play games on the computer.
A. is B. was
C. will be D. has been
Tom has got into the habit ________for half an hour after getting up every morning.
A. to run B. to running
C. of running D. for running
