He joined a club to practice _____.[ ]
A. sing
B. sang
C. singing
答案:C
Sir, you ________ take this seat. It’s just for the old.
A.won’t
B.can’t
C. oughtn’t to
D.needn’t
如未接到迎接的个人散客或小包价旅游团,导游要与司机配合,在尽可能的范围内至少寻找( )分钟,当确认迎接无望时,经计调部门同意方可离开。
A.10B.20C.30D.40