单选题I have heard both teachers and
单选题This is an illness that can result in total
单选题The bedroom is in a terrible mess;
单选题To succeed in a scientific research project,
单选题—I don't understand how you got a ticket. I
单选题They both had met the manager before,
单选题Tom______better than to ask Dick for help.
单选题The driver carefully checked his car______it
单选题I don't allow ______ in my office and I don't
单选题He never hesitates to make such
单选题Nowhere in nature is aluminum found free, owing
单选题All of us would have enjoyed the party much more
单选题Mr. Brown had us______ reports all afternoon.
单选题She did her work ______her manager had instructed.
单选题He didn't seem to mind______TV while he was
单选题Hydrocarbons, ______ by engine exhausts, react
单选题Any student______in chess can apply for
单选题Lisa stood motionless at the end of the diving
单选题______they must learn in a course is not
单选题If Delia______so much work to do, she would have