5.A. opposed B. objected C. unfavourable D. against
6.A. unobtainable B. undesirable C. unsolved D. unsolvable
7.A. can B. may C. does D. should
8.A. doesn’t have B. didn’t have C. hadn’t had D. haven’t have
9.A. do B. have done C. have had D. have
10.A. has done B. have done C. did D. had done
11.A. had B. has C. have D. have had
12.A. is trying doing B. tries doing C. is trying to do D. has tried to do
13.A. did B. made C. lived D. took
14.A. changed B. changeable C. change D. changing
15.A. but B. nor C. and D. or
