John regretted _______ to the meeting last week.
A: not to be going
B: not having been going
C: not to go
D: not oing
A: not to be going
B: not having been going
C: not to go
D: not oing
举一反三
- John regretted ________ to the meeting last week. A: not going B: not to go C: not having been going D: not to be going（A）
- Mary regretted_____to John’s birthday party last Sunday. A: not going B: not to go C: not having been going D: not to be going
- John regretted ________ to the meeting last week.
- Mary regretted _________to John‘s birthday party last Sunday. A: not going to B: not to have gone C: not to be going D: not go
- This project is known to () for three months. A: having been going on B: go on C: have been going on D: be going on