题目内容

We must ________ on our study．

[　　]

A．

concentrate

B．

concentrate at

C．

concentrate on

D．

concentrate with

答案：C

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We must ___ on our study..

A. concentrate B. concentrate at C. concentrate on D. concentrate with

完成句子（每空限填一个词）（共10小题；每小题1分，满分10分）

1.每当我处于困境时，我的朋友们总是毫不犹豫地来帮助我。

Whenever I am in trouble, my friends always come to help me ______ ______.

2.他进来时，所有人的视线都集中在他身上，使得他很尴尬。

All eyes were _______ _______ him when he came in, which made him embarrassed.

3.我们必须降低成本，这样才能将我们产品的价格下调。

We must ____ ____ on the cost so that the price of our product can be brought down.

4.他看报纸很投入,没有注意到有什么人进入教室.

He was so absorbed ______ a newspaper ______he didn’t notice anyone enter the classroom.

5.有时候在与人相处时，我们需要有人指点。

Sometimes we need help to ______ ______ with others.

6.因为她不信守诺言，我们从此情断义绝。

We weren’t going to be friends any more because she couldn’t ______ her ______.

7.他的零钱已经用光了。

His pocket money has been ______ ______.

8.与1800年相比，世界人口已经增长了六倍。

The world’s population has grown by six times what______ ______ in 1800.

9.这所学校每年招收200名学生。

200 students ______ ______ to the school every year.

10.除非必要，你最好不要查字典。

_______ _______, you’d better not refer to the dictionary.

We must ______ on our study.

A.
concentrate
B.
concentrate at
C.
concentrate on
D.
concentrate with

Playing computer games can give us some relaxation after school, but as students we must ________ on our studies．

A.
acquire
B.
insist
C.
concentrate
D.
decide

We must ______ on our study.

Playing computer games can give us some relaxation after school, but as students we must ________ on our studies．

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