Mark the letter A, B, C or D on...

Câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions

A. Since I’m unable to get in contact with him, it seems certain that he’s closed his e–mail account.

B. If no one is able to get in contact with him, he ought to get e–mail account for himself

C. He may have closed his e–mail account, but I won’t know for sure until I get in touch with him

D. I must have got his e–mail address wrong, because he’s not giving me any reply.