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请选出下列各句中正确的一项：
1. What Rob has to do ------more attention to his pronunciation.
A. are paying B.are pay C.is pay D.is paying
2. Ian is known------his generous contributions to charuty.
A. as B.to C.for D.of
3. The naughty boy----- a piece of chewing gum on the teacher’s chair.
A. stick B.stuck C.strick D.struck
4. What’s that strange -------coming from the kitchen?
A. odor B.order C.smelling D,smelled
5. Wife:I forgot the car key.
Husbend:-------I have an extra one with me.
A.What’s up? B.No way C.Watch your tongue D.Never mind
答案：CCBAD
