The letters for the boss___________ on his desk but he didn’t read them until 3 days later. ..

The letters for the boss___________ on his desk but he didn’t read them until 3 days later.
A．were put B．was put C．put D．has put

A


考查时态语态。letter“信件”和put“放”之间是被动的关系，所以排除C和D，然后因为letters
是复数，所以选择A选项。句意：给老板的那些信放在他的办公桌上，但是直到三天以后他才
读了那些信。

put 和letter是动宾关系，所以要用被动语态。并且letters 是主语，不能用第三人称单数has的形式 如果用完成时，那也要用have been put, 而不是has put

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