Mail or gifts posted by companies to customers ________ advertising.
| A．are another | B．is the other | C．are other | D．is another |
It was not until midnight they reached the camp site.
| A．that | B．when |
| C．while | D．as |
This is _______ story I’ve told you about．Isn’t it _______ interesting one?
| A．the; the | B．a; an | C．the; an | D．an; the |
This is the first time that I _____ the summer palace．
| A．had visited | B．have visited | C．visit | D．visited |
—Excuse me, could you tell me where the post office is?
—__________, but I’m a stranger here．
| A．I’m not sure | B．I’m sorry | C．That’s right | D．I’m afraid not |
He may not even drink water at night, _______ swallowing insects possibly floating on the surface．
| A．in case of | B．for fear of | C．for the sake of | D．in line with |