单项选择题
A.what B.which C.that D.all
I am not used to speaking（） public.A.inB.atC.onD.to
单项选择题I am not used to speaking（） public.
A.in B.at C.on D.to
I'd like to take（）of this opportunity to thank all of y...
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
Running your own business usually（）working long hours.A...
单项选择题Running your own business usually（）working long hours.
A.includes B.involves C.contains D.comprises
