问题
选择题
— Hello, may I speak to Mr. Smith?
— I'm sorry, _____ he is out. [ ]
A. but
B. and
C. or
D. so
答案
答案：A
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— Hello, may I speak to Mr. Smith?
— I'm sorry, _____ he is out. [ ]
A. but
B. and
C. or
D. so
答案：A