1、【题目】He fell asleep immediately last night; he must ________ (be) very tired.

答案：

have been

解析：

暂无解析

1、【题目】Heaskedmewhethermybrother________(fly)toBeijing.

答案：

解析：

1、【题目】Herefusedtotelluswhetherhe________(undertake)thejob.

答案：

解析：

1、【题目】He refused to tell us whether he ________ (undertake) the job.

答案：

would undertake

解析：

暂无解析

1、【题目】Agreatnumberofsmallpowerstations________(setup)intheircounty sinceliberation.

答案：

解析：

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】Night________(fall),wehurriedhome.

答案：

解析：

1、【题目】Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.

答案：

解析：

1、【题目】Thefloordoesnotlooksobadwhen________(sweep)clean.

答案：

解析：

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

答案：

解析：

1、【题目】Night ________ (fall), we hurried home.

答案：

falling

解析：

暂无解析

1、【题目】Howlong________they________(dig)theditch?

答案：

解析：