问题
选择题
－Is it your boss in the office?
－No, it _____ be him. He has gone to Beijing on business. [ ]
A. mustn't
B. shouldn't
C. can't
D. needn't
答案
答案：C
搜题请搜索小程序“爱下问搜题”
－Is it your boss in the office?
－No, it _____ be him. He has gone to Beijing on business. [ ]
A. mustn't
B. shouldn't
C. can't
D. needn't
答案：C