题目内容
9. Nobody (know) the number of the workers so far.
9. has known
2. 我很兴奋能和这些科学家近距离交谈。
I'm excitedthese scientists.
4. We are here to provide people with help.(同义句转换)
We are here to people.
() 7. Don’t you think it is to have enough food and drinks during our stay there?
A. useful B. useless C. used D. using
4. Students should not give up (study) at any time.
5. The problem is so hard that he can’t work it out.(同义句转换)
The problem is for him work out.
4. The teacher will have a talk with all her students (一对一) about their problems.
3. — Did you notice anybody enter the building just now?
—Sorry,I (cut) down the tree in the garden.
7. The poor old man makes a living by (train) dogs.
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