We shouldn’t drink _______ we drive and we mustn’t drive if we’ve drunk.
| A．unless | B．before | C．until | D．while |
Only an hour ago ________ out why he was absent.
| A．did the teacher found | B．the teacher found |
| C．did the teacher find | D．had the teacher found |
Don’t take ________for granted that he will agree with you on that point.
| A．it | B．what | C．which | D．that |
A bus passed________ just a moment ago.
| A．on | B．by | C．in | D．at |
_____ her help, we were able to finish our work ahead of time.
| A．Result in | B．Brought in | C．Introduced to | D．Thanks to |
The engine of the ship was out of order and the bad weather _____ the helplessness of the crew（船员） at sea.
| A．added to | B．resulted from | C．turned out | D．made up |