---Your sister looks beautiful.Is she a model or a film star?
---（）.She’s a doctor.

单项选择题---Do you mind if I smoke? ---Well,actually,（）.

A.I’d rather you didn’t
B.go ahead
C.it doesn’t work
D.never mind

单项选择题---Let’s go swimming,shall we? ---（）.

A.It’s my pleasure
B.It doesn’t matter
C.Sounds like a good idea
D.I agree with