二、從方框中選擇合適的詞，用其適當(dāng)形式填空。

        invent    discover   find

1.The camera ______ in 1887 by Joseph Nicephore Niepce.

2.Do you know who _____America?

3.Twenty years later,he_____ his younger brother.

        be used for     be used as     be used to     used to

4.This big room can _____ our laboratory.

5.The life here is much happier than it _______ be.

6.______you  ________your English teacher's pronunciation?

7.Knives _____ cutting things.

答案：

1.was invented

2.discovered

3.found

4.be used as

5.used to

6.Are used to

7.are used for

題目來(lái)源：一課一練創(chuàng)新練習(xí)九年級(jí)英語(yǔ)全一冊(cè)人教版 > Unit 6 When was it invented？

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