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I___all the exercises before my teacher collected the exercise books. A.have finished B.finished C.had finished D.finish 【答案】C 【解析】从 before my teacher collected…可知时态应用过去完成时,故答案是 C。 2. You have to leave now___you can catch the early bus. A.so that B.as so...
79. Most students of Class Two are doing morning exercises while the rest ___ (clean) the classroom now. 80. It’s raining outside. We’d better ___(stay) at home reading books and watching TV. 81. More and more trees ___(plant) around our city every year so we can enjoy much...