So far scientists have done a lot of research on Mars successfully.So far a lot of research on Mars done successfully by scientists. 题目和参考答案——青夏教育精英家教网—

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So far scientists have done a lot of research on Mars successfully.（改为被动语态）

So far a lot of research on Mars ________ ________ done successfully by scientists.

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A. B. C.

We have been close friends since we were at the primary school. (对划线部分提问)

________ have you been close friends?

Kate plans to work for the community with some classmates of________ this summer.

A.she B.her C.herself D.hers

Graham was one of the wisest friends of mine. Once I complained to him that I cycled two miles from my house to the town centre but u1. there was a big hill on the way. To my surprise, he replied that I should feel lucky and be glad of the e2. exercise the hill provided.

His words shocked me. So almost all of a sudden, my attitude to the hill c3. . The next time when I got close to it,

instead of complaining as usual. I told myself that this hill would help me to keep fit. And the r4. was that I found the way up the hill was much easier that I had expected -- it cost me nothing but some energy and sweat（汗）.

Several days later, I happened to read an article about pilot Douglas Bader. In 1931 both of his legs were lost in a

flying a5., but he decided to fly again and he became an excellent pilot and the only pilot that had no legs. He said, “Don’t tell yourself that things are too difficult or i6.. Make up your mind and then try your best and then you can achieve your goal.”

I think the two cases bring the same message: We cannot a7. difficulties in life, but we can choose our attitude

towards them - to face them or to run away from them. And some difficulties, actually, are not as great as they seem to be.

— ________.

— Good luck.

A.I will go to Germany with my parents this summer holiday.

B.I won the first prize in the chemistry competition last week.

C.I am going to have an interview in that company this afternoon.

D.I fell off the bicycle and hurt my leg on my way home yesterday.

Please ________ your notes once again before doing your homework.

A.going over B.went over C.go over D.to go over

我已经等了他三十分钟了。

I have ________ ________ him for about 30 minutes.

—Look! Someone the icebox back to the corner.

—Well, it wasn?t me. I didn't do it.

A.has moved B.is moving C.was moving D.will move

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