1. It wasn’t until nearly a month later __ I received the manager’s reply.
A. since B. when C. as D. that
2. It was __ back home after the experiment.
A. not until midnight did he go
B. until midnight did he go
C. not until midnight that he went
D. until midnight when he didn’t go
3. It was in the classroom __ was built by the local government they finished their homework.
A. where; that B. that; that C. that ;where D. where; where
4. — Did Mr. Smith come yesterday?
—He __ come yesterday.
A. do B./
C. did D. has
5.I failed in the final examination last term and only then __ the importance of studies.
A. I realized B. I had realized
C. had I realized D. did I realize