He paid for a seat, when he free.
| A．should have entered | B．could have entered |
| C．could enter | D．would enter |
Great changes have taken place in that school. It is no longer it was 20 years ago,it was so poorly equipped.
| A．what; when | B．that; which | C．what; which | D．which; that |
Who would you rather the watch?
| A．have to repair | B．have fixed | C．get repaired | D．get to repair |
The weather turned out to be fine yesterday. I the trouble to carry my umbrella with me.
| A．should have taken | B．could have taken |
| C．needn’t have taken | D．mustn’t have taken |
--- Will you attend the meeting this afternoon?
--- But I told anything about it.
| A．wasn’t | B．am not | C．haven’t been | D．won’t be |
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 |