16.It's no good ____ him the truth now.
A. not to tell B. tell C. telling D. to tell
17.It's important ____ too much about your failure.
A.not to worry B.not worry C.not worrying to D. don’t worry
18.Don’t forget ____ your homework before coming to class.
A. doing B.having done C.to be done D. to do
19. Last Sunday, our volunteer team ____ a lot of food packages to homeless peoplein the flood-hit region.
A. were bringing B. brought C. have brought D. had brought