1 . _____________ (都不) of the three boys was late for school.

2 . All of us have been to Mount Tai. (改为否定句)
____________ of us _____________ been to Mount Tai.

3 . None of the money _______ (be) hers.

4 . 我们中谁也没去过北京。
_____________________________________________

5 . 这个城市已经没有旧楼了。
________ the old buildings ________ seen in this city.

6 . There were not any telephone calls made in English between the two countries years ago.
= ________ the telephone calls ________ in English ________ the two countries years ago.

7 . 他们中没有一个人能买得起演唱会的门票。
__________________________________________________________________

8 . Simon only told his secrets to three friends, but _____ （没有一个）of them kept it for him.

9 . 我有很多的书，但没有一本是有趣的。
I have many books, but ________ ________ ________ ________ ________.

10 . Because of the terrible weather, n______________ of us want to go climbing.