19、I _________ have written to him because he would come back as he informed us.

A. couldn't          B. ought to            C. must                D. needn't

19、D

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科目：高中英語 來源： 題型：

I _____________ have written to him because he would come back as he informed us.

     A. couldn't          B. ought to            C. must                D. needn't

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科目：高中英語 來源： 題型：

I _________ have written to him because he would come back as he informed us.

A. couldn't          B. ought to            C. must                D. needn't

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