问题 填空题

单词拼写。

1. Metals e ____ when they are heated.

2. They were ____ ( 费力) up the hill with heavy bags.

3. The people there are fighting to gain their f _____ from

  foreign control.

4. It was a new form of  _____ ( 细菌) and nobody knew how  it would affect humans.

5. After exam, we should make a s  ____  of the results of  the exam briefly.

答案

1. expand   2. struggling   3. freedom   4. bacteria   5. summary

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