问题
She is said _____in the United States forfour years before she came back to work in our company.
A:Good luck
B:to be studying
C:to have studied
D:studying
B:to be studying
C:to have studied
D:studying
正确答案是：
同类题型
What do you think of my suggestion? — I’m sorryEr… I _______ about something else
Would you mind if I turned off the air conditioner —-______. It makes no difference to me.
Sam, be quiet! My grandmother in the next room.— OK. Sorry.
What did Mr. John say just now—-He told us _______ out of the window in class.