2. ____________(举行考试) /____________(参加考试)

3. _____　 _________(提前)

(20)1. How did you do on your __________(考试)?你这次考试的结果如何？

3. Some scientists __________(做实验)on animals.有些科学家用动物做试验。

(19)1. The report __________(预先提出) the suggestion that safety standards should be improved.该报告建议安全标准应该改进。 2. It is a popular show, so __________(提前) booking is essential. 这是个很受欢迎的演出，所以一定要提前订票。

2. The teacher gave each of us a piece of filter paper before ________　 ______ __________(做实验).做试验前，老师给我们每个人发了一张滤纸。

2. There are 55____________(少数民族)in our country.我国有55个少数民族。

(18)1. ______　 / __________　 /_________ / _______ an experiment(进行实验)

3. _________　 _____(卷入) the robbing, he was charged.

(17)1.Only a ________(少数) of British households do not have a car.英国只有少数家庭没有汽车。

2.He______　 __________　 ______(忙于)writing his second book.

4.He ______　 ____　 _________(得到好处) of fifty thousand US dollars on his house.

(16)1. How should we ________(投入)ourselves in school life?我们应该怎样投入学校生活？

5. I must ___________(承认)that it's more difficult than I thought it would be.我必须承认，这比我想象的要困难得多。

(15)1. There is very little ___________(利润) in selling newspapers at present. 现在卖报纸利润很少。 2. You can ___________(受益)by my mistakes and avoid them yourself.　你可以从我的错误中得到教训，避免犯同样错误。 3. It will ___________(使得到好处) you nothing to do that.你做那件事没有什么好处。

4. He _____　 ________　 ____(送进)to the hospital suffering from burns.他由于烧伤，被送入医院治疗。