It was ______ back home after the experiment.
| A．not until midnight did he go |
| B．until midnight that he didn’t go |
| C．not until midnight that he went |
| D．until midnight when he didn’t go |
You ______ last week if you were really serious about your work.
a. ought to come b. ought to be coming c. ought have come d. ought to have come
.The students in the classroom ______ not to make so much noise.
a. need b. ought c. must d. dare
No one ______ that to his face.
a. dares say b. dares saying c. dare say d. dare to say
“Time is running out,______?”
a. hadn’t we better got start b. hadn’t we better get start
c.hadn’t we better get started d. hadn’t we better not started
.I’m sorry, but I had no alternative. I simply ______ what I did.
a. must do b. had to do c. ought to have done d. have to do