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：
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