Had they known what was coming next, they________ second thoughts.
| A．may have |
| B．could have |
| C．must have had |
| D．might have had |
______ it with me and I’ll see what I can do.
| A．When left | B．Leaving |
| C．If you leave | D．Leave |
You won’t know whether the coat fits you until you ______ it on.
| A．will try | B．have tried |
| C．tried | D．are trying |
I decided to go to the library as soon as I ______.
| A．finished what I was doing |
| B．finished what I did |
| C．would finish what I was doing |
| D．finish what I did |
--- Don’t forget to bring my new books tomorrow afternoon.
--- No, I ______.
| A．don’t | B．do | C．won’t | D．will |
When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work.
| A．was coming | B．had come |
| C．comes | D．would come |