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1、She rang the doorbell for about a minute but no one_____it

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1、She rang the doorbell for about a minute but no one_____it.
A replied B answered C heard D opened
2.I_____my wallet at the theatre.
A have lose B lost C was lost D lose
3.I can't find my book anywhere,I_____ it on the shelf.
A have put B had put Cput D am putting
1、She rang the doorbell for about a minute but no one_____it
1B 2B 3C
1习惯用法
2过去式 A是完成时,应为have lost C是被动语态,不合题意.D为一般现在时
3过去式 A为完成时 B为过去完成时 D是现在进行时.都不合题意.