It is announced that ______$20,000 reward will be offered for______ _return of the stolen sculpture．
| A．a; the | B．不填; the |
| C．a; a | D．不填；a |
考点：冠词
By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.
| A．walks | B．walked | C．has walked | D．had walked |
------Is there anything wrong , Bob? You look sad.
------ Oh, nothing much. In fact, I ______ of my friends back home.
| A．have just thought | B．was just thinking |
| C．would just think | D．will just be thinking |
The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March..
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
------Where did you get to know her?
------ It was on the farm ______ we worked.
| A．there | B．that | C．where | D．there |
______ I really don’t like art, I find his work impressive.
| A．As | B．Since | C．If | D．while |