1、【题目】Night________(fall),wehurriedhome.

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1、【题目】Thosewho’dliketovisittheexhibition________(sign)yournameshere.

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1、【题目】Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.

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1、【题目】I shall never forget ________ (meet) the late Premier Zhou during his inspection of our factory.

答案：

meeting

解析：

暂无解析

1、【题目】Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.

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1、【题目】he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.

答案：

travels, appears

解析：

暂无解析

1、【题目】Herefusedtotelluswhetherhe________(undertake)thejob.

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1、【题目】Iwonderifhecouldgetit________(do)beforetomorrow.

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1、【题目】I wonder if he could get it ________ (do) before tomorrow.

答案：

done

解析：

暂无解析

1、【题目】A beam of light will not bend round corners unless ________ (make) to do so with the help of a reflecting device

答案：

made

解析：

暂无解析

1、【题目】heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.

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1、【题目】A great number of small power stations ________ (set up) in their county since liberation.

答案：

have been set up

解析：

暂无解析

1、【题目】Howlong________they________(dig)theditch?

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