—It must be John who is in the office. —I'm sure it _____ be John. I saw him off at the railway

题目简介

—It must be John who is in the office. —I'm sure it _____ be John. I saw him off at the railway

题目详情

—It must be John who is in the office.
—I'm sure it _____ be John. I saw him off at the railway station just twenty minutes ago.
[     ]
A. won't
B. mustn't
C. can't
D. needn't
题型:单选题难度:中档来源:专项题

答案

C

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