31. --______ one and a half days enough for the painting to be finished?
--I don’t think it’s enough and only after _________ go on with it.
| A．Is; will he recover he can | B．Are; he recovers can he |
| C．Are; he recovers he can | D．Is; he recovers can he |
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 |
26．— How is the campus cleaning going?
— We've cleaned it up, ______ at least most of it．
| A．and | B．then | C．or | D．Nor |