— It be Mr．Johnson who is in the office．— No it be him．I saw him off at the airport hal

问题补充：

— It be Mr．Johnson who is in the office．

— No, it be him．I saw him off at the airport half an hour ago．

A. can’t ; can’t

B. must; can’t

C. must; mustn’t

D. may; mustn’t

答案：

A. can’t ; can’t

(答案→)B. must; can’t

C. must; mustn’t

D. may; mustn’t

解析：可联系答.案.网客服索取。