4. 我們確實不應該使用紙巾。

We really   paper napkins.

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Ⅳ.閱讀理解

  The earth is about 4 ,600 million years old. We humans have lived on the earth for only 35 ,000 years,but during this period we have changed our planet a lot in many ways. 1

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根據(jù)材料內(nèi)容，從下面五個選項中選出能填人文中空 缺處的最佳選項，使短文意思通順，內(nèi)容完整。

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4. My father used (go) to work by car,but now he takes the bus.

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We are waiting to see what he will do

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I.用所給詞的正確形式填空

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