It took a great deal of courage to admit that all his efforts had been ____.
| A．in vain | B．in turn | C．in return | D．in danger |
— Have you thought of a theme for your poster yet?
— No, I ______ a lot about it, but I haven’t decided.
| A．will think | B．have been thinking | C．had thought | D．was thinking |
______ left before the deadline, it doesn’t seem likely that John will finish the job.
| A．Though such a short time | B．Because such a short time |
| C．With such a short time | D．As such a short time |
Medical ______ shows that men are more likely to have heart attacks than women.
| A．expectation | B．evidence | C．experience | D．exchange |
Several years had passed ______ I finally realized the true value of friendship.
| A．when | B．that | C．after | D．before |
It’s a mistake to think of Chongqing only ______ its tourist attractions.
| A．in addition to | B．by way of | C．in terms of | D．by means of |