题目内容
用所给动词的适当形式填空,必要时可加助动词。
1.Light (invent)in America in the 19th century.
2.It is the first time I (chat)online.
3.While I (wait)for the bus,I met my aunt.
4.Do not forget (turn)off the light before you leave.
5.1 was sorry that I (hurt)her feeling.
1.invented 2.have chatted 3.was waiting 4.to turn 5.had hurt
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