2016年的上半年有[ ]
A.366天
B.181天
C.182天
答案:C
My sister has a ________ dog. [ ]
A. funny
B. cute
C. old
— It _______ be Jack 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