__________ you understand the rule, you will have no further difficulty.
| A．While | B．Once | C．Though | D．Unless |
If David his legs in the last training, he would join in the coming World Cup, which he has been longing to compete in.
| A．didn’t hurt | B．hadn’t been hurt |
| C．wasn’t hurt | D．hadn’t hurt |
You don’t seem veryabout the suggestion and why not give us some other advice?
| A．enthusiastic | B．eager | C．care | D．anxious |
The police the murderer everywhere when he suddenlyin the hospital.
| A．searched for; appeared |
| B．were searching; was appearing |
| C．were searching for; was appeared |
| D．were searching for; appeared |
25．--She looks very happy．She ________have passed the exam．
--I guess so．It’s not difficult after all．
| A．should | B．must | C．could | D．might |
24．Progress _________ so far very good and he is sure that his new book will be finished on time．
| A．was | B．had been | C．has been | D．will be |