— Sorry, do you mind if I smoke here
— Yes,（）.

单项选择题The house I grew up （）has been taken down and replaced by an office building.

A. in it
B. in
C. in that
D. in which

单项选择题— Hey, you haven't been acting like yourself. Is everything OK —（）.

A. I'm fine, thanks
B. Sure, it is
C. That's good
D. It's OK

单项选择题— I' m surprised to hear that Sue and Paul have（）. — So am I. They seemed very happy together when I last saw them.

A. broken up
B. finished up
C. divided up
D. closed up

单项选择题I'm amazed to hear from my school teacher again. （）, it is ten years since we met last.

A. In a word
B. What's more
C. That's to say
D. Believe it or not

单项选择题We are at your service. Don't （）to turn to us if you have any further problems.

A. beg
B. hesitate
C. desire
D. seek