1. 我今天值日,必须早到校。

I’m                         today, and I must get to school early.

2. 你能尽快把它还给我吗?

     Could you please           it.            to me as soon as possible?

3. 他经常梦想到那所著名的大学去进一步深造。

     He often                        entering that famous university for further study.

4. 他不小心跌倒并摔断了左腿。

     He was not careful. He                         and broke his left leg.    .

5. 恐怕普通人买不起这么贵的房子。

I’m         that ordinary people can’t           to buy         an expensive house.

6. 到目前为止,盖茨夫妇已捐赠了240亿美元帮助穷人。

          , the Gates have                        twenty-four billion dollars to help the pool people.

7. 必须采取措施防止此类事故再次发生。

    Something must               to     his kind of accident                  again.