—Where's that report?
—I brought it to you ________you were in Mr.Black's office yesterday.
| A．if | B．when |
| C．because | D．before |
31．Laura was asked several questions, but she couldn't answer ______ of them．
| A．none | B．either | C．neither | D．Any |
30．1 tried to fix the car myself but ______ the attempt after a couple of hours．
| A．gave in | B．gave off | C．gave up | D．gave away |
29.On weekends when Dianna comes back home from school, she eats everything in ______．
| A．scene | B．sight | C．view | D．Range |
28．In most cases, customers can't help ______ to buy things they actually do not need．
| A．to persuade | B．to be persuaded | C．persuading | D．being persuaded |
27．What do you think of his suggestion ______ we organize a football club?
| A．which | B．whether | C．that | D．What |