11.We spend time _______________ volunteer work.
B. to do
C. on doing
D. for doing
12.My father prefers reading to ______________TV.
13.Lam is studying very hard because she ____________________an exam next Monday.
A. is going to have
B. won't have
C. are having
14._______________don’t children play in the chicken? Because it is dangerous.
15.His daughter is not old ________________ to drive a car.
16.We _______________ tennis a lot, but we don’t play very often now.
A. used to play
B. was playing
C. are used to play
17.According to the law, drivers ___________________ at stop signs.
A. must stop
B. has to stop
C. should stop
D. ought stop
18.Mr. Brown _____________________ this city two years ago.
C. is leaving
D. will leave
19.Unfortunately, the new wife was very _______________________ Little Pea.
A. cruel to
B. nice to
C. friendly with
D. cruel with
20.Tam Cam is always one of the famous _______________that many children read today.