3 . 根据句意，选择单词或短语并以其适当形式填空。

A. leave out        B. arise from        C. broke down       D. set foot on        E. knock over

1. It was the first time I had ________ African soil.
2. Be careful not to ________ the flower vase.
3. Talks with business leaders ________ last night.
4. Emotional or mental problems can ________ a physical cause.
5. You can ________ the third sentence to make the essay shorter.

4 . “I haven’t heard from my parents these days,” said Mary. （直接引语变成间接引语）
→Mary said that she ________ heard from her parents those days.

5 . “Have you got anything interesting I can read, George？” she said. (直接引语变成间接引语)
→She asked George ________ he________ got something interesting she could read.