Perhaps it will be a long time back from abroad. A. when Tom comes B. when Tom will c——青夏教育精英家教网—

摘要： Perhaps it will be a long time back from abroad. A. when Tom comes B. when Tom will come C. before he comes D. that Tom comes

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Perhaps it will be a long time 　　 from abroad.

A. before Tom comes back　　　　　　　　　　　　 B. when Tom will come back

C. when Tom comes back　　　　　　　　　　　　 D. that Tom comes back

A. before Tom comes back　　　　　　　　　　　　 B. when Tom will come back

C. when Tom comes back　　　　　　　　　　　　 D. that Tom comes back

－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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