4.Perhaps it will be a long time from abroad. A.when Tom comes back B.when Tom will come back C.before Tom comes back D.that Tom comes back 查看更多

 

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-Do you know when Tom ________ back from abroad?

-Perhaps it will be a long time before he ________back.

[  ]

A.will come; will come

B.comes; will come

C.will come; comes

D.comes; comes

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