I will be surprised if you can get Calvin, who is very busy, ______these tickets for you.
| A．buy | B．buying | C．buys | D．to buy |
I ___________ to phone her all day, but whenver I phone her, the line is engaged.
| A．tried | B．had been trying | C．have tried | D．have been trying |
Not until the press reported the pollution _________ why the water supply had been cut off.
| A．people did know | B．people had known |
| C．did people know | D．had people known |
We are said to be living in ________ Information Age, _______ time of new discoveries and great changes.
| A．an, the | B．/, the | C．/, a | D．the, a |
Spring comes and the grass is beginning to ____________.
| A．stand up | B．come up | C．bring up | D．build up |
The students of Senior 3 are now under great pressure for it will be just one year ______ they take the Entrance Examination.
| A．since | B．after | C．before | D．when |