In winter, we must pay attention to _________.
Trees can stop the wind ______the earth away. A. from blowing B. to blow C. blew
______Mum was ill yesterday, _______ she still went on working. A. Though; / B. Though; but C. Because; /
I am glad to hear that you_________________ in English.. A.have made a rapid progress B. have make rapid progress C. have made rapid progress
Students ought _________ the truth. A. to tell B. tell C. telling
—Could you tell me______ at this time yesterday? —Oh, I was watching TV. A.when you were going B.where you were going C.what you were doing