帐务停机期限为多少天,该期间客户号码保留,逾期该号码进入到冷冻期?()
A.30
B.60
C.90
D.120
参考答案:B
Mr Smith has two______ , both of whom are teachers in a school.
A.brothers-in-law
B.brother-in-laws
C.brothers-in-laws
D.brothers-in law
— Tom graduated from college at a very young age.
— Oh, he _____ have been a very smart boy then. [ ]
A. could
B. should
C. might
D. must