What do you enjoy ____ your spare time?
A. kill B. to kill C. killing D. killed
The workers were working from 7:00 a.m. to 7:00 p.m. that day, only ____ once at noon to have their lunch.
A. to stop B. stopping
C. to have stopped D. having stopped
If the weather had been better, we could have had a picnic. But it ____ all day.
A. rained B. rains C. has rained D. is raining
-_____ you read the story?
-Yes. I _____ it at school.
A. Have; read B. Did; read
C. Have; have read D. Did; have read
There is only one more day to go ____ your favorite music group play live.
A. since B. until C. when D. before
-Must I turn off the gas after cooking?
- Of course. You can never be ______ careful with that.
A. enough B. too C. so D. very
