If you keep on practicing , you will be a very good swimmer one day.
A. to swim B. swimming C. swim D. swum
The scientists will succeed in their experiment they give up.
A. unless B. if C. after D. until
Your naughty brother hardly puts his books in order, _ he?
A. doesn't B. didn't C. does D. did
They hope a new underground railway line in the area in the near future.
A. build B. to build
C. building D. will build
Joan says that the conference begin at 9 0'clock, but she is not sure about it.
A. must B. will C. may D. should
Jim wasn't very hungry, he didn't want to eat the cakes at all.
A. and B. but C. or D. so
