He didn't live up to（）had been expected of him.

单项选择题I am not used to speaking（） public.

A.in
B.at
C.on
D.to

单项选择题I'd like to take（）of this opportunity to thank all of you for your efforts.

A.profit
B.benefit
C.occasion
D.advantage

单项选择题Running your own business usually（）working long hours.

A.includes
B.involves
C.contains
D.comprises

单项选择题The same factors push wages and prices up together, the one（）the other.

A.emphasizing
B.multiplying
C.increasing
D.reinforcing

单项选择题She will surly finish the job on time （）she is left to do it in her own way

A.in case
B.in that
C.so long as
D.as far as