We ______ last night, but we went to the concert instead．
| A．must have studied | B．might study |
| C．should have studied | D．would study |
Our plan to ______ a New Year’s party has won supports from our teachers.
| A．organise | B．volunteer |
| C．solve | D．invite |
—Bob has gone to California.
—Oh, can you tell me when he ______?
| A．has left | B．left |
| C．is leaving | D．would leave |
Leave your key with a neighbor _____you lock yourself out one day.
| A．ever since | B．even if |
| C．soon after | D．in case |
It was two weeks before the Spring Festival and the shopping centre was _____ with shoppers.
| A．full | B．crowded |
| C．satisfied | D．noisy |
Many students go to school _______ the tube in Beijing every day.
| A．with | B．for | C．on | D．at |