It was with great joy _______ he worked out the problem that he had long been puzzled about.
| A．which | B．that | C．because | D．since |
Without permission, no one ______ let out the news.
| A．shall | B．should |
| C．is supposed to | D．is allowed |
In China when caught, those corrupt(腐败的) officials are sometimes limited to _________ in a certain place, only __________ their problems within an appointed time(规定的时间).
| A．living, to report | B．living, reporting |
| C．live, reporting | D．live, to report |
Had it not been for the fact that about 30 pupils __________ in the state of Connecticut a fortnight ago, their parents ___________ in deep sorrow now.
| A．had been killed, wouldn’t be |
| B．were killed, couldn’t be |
| C．would have been killed, mightn’t be |
| D．should be killed, wouldn’t be |
________, you'll never be able to persuade him.
| A．However hard may you try |
| B．Try however hard you may |
| C．Hard as you may try |
| D．Try hard as you may |
Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.
| A．treated | B．to be treated |
| C．being treated | D．be treated |