1 . As a member of society, I am aware that being responsible is _____ it takes to make a better society.

2 . Everyone is different and that is _______ makes our world much better.

3 . The key to becoming happy is________ you treat your life and work. （用适当的词填空）

4 . And this is, when my taxi driver told me, ________ I now call, “The Law of the Garbage Truck.”(用适当的单词填空)

5 . English has many borrowed words, _____ it is rather confusing to learners.

A．this is why	B．this is because
C．which is why	D．which is because

6 . The only question left is__________ often the workers are paid.

7 . His trouble is ________ he can get the help he needs.
他的麻烦是如何得到所需要的帮助。

8 . His car broke down on the way. That’s ________ he is late.
他的车坏了，那就是他迟到的原因。

9 . This is ________ we overcome the difficulties.
这就是我们克服困难的方法。

10 . The question is ________ we shall have the sports meeting.
问题是我们在哪里开运动会。