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I’m not sure ________ he will come here. ________ he comes here, please let me know.

A. that, When      B. that, If         C. if, Whether       D. whether, When

1、D

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I’m not sure ________ he will come here. ________ he comes here, please let me know.

A. that, When      B. that, If         C. if, Whether       D. whether, When

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