The chemistry teacher asked the students ________ more attention _________the lab clean.

A．to pay ,to keep B．to paying ,to keeping

C．to pay , to keeping D．paying ,keeping

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 用所給單詞的適當(dāng)形式填空。

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按要求改寫(xiě)下列句子。

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    　　　　 　　　　 　　　　 the fish cooked?

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    I 　　　　 　　　　 　　　　 stay at home alone by my parents.

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閱讀理解

(　　　) 1. We can see _______ in the butterfly exhibition .

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閱讀理解。

We all want to have vacations. To me, it’s very important to relax myself. I finished a one-week vacation just now. Let me tell you what I did. I know you will feel bored when you look at other people’s vacation pictures!

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