__________not for the support of the teachers,the student could not overcome her difficulty.
A.It were B.Were it C. It was D. Was it
Many Chinese brands, __________their reputations over centuries,are facing new challenges from the modern market.
A.having developed B.being developed C. developed D. developing
Mr. and Mrs. Brown would like to see their daughter _____, get married, and have kids.
A. settled down B. keep off C. get up D. cut in
She asked me _______ I had returned the books to the library, and I admitted that I hadn’t.
A. when B. where C. whether D. what
—I want to see Mr. White. We have an appointment.
—I’m sorry, but he is not ________ at the moment, for the meeting hasn’t ended.
A．busyB．activeC．concernedD．available
My room is a mess, but I __________clean it before I go out tonight. I can do it in the morning.
A． daren’t B．shouldn’t C．needn’t D．mustn’t
