23、Who enjoys going by bike? 24、This is an useful book. 25、I am busy,I have no time to play with you. 26、He is a good student,he always tries to finish all his homework alone. 27、___How many students are there in the classroom now?__None . 28、----Who else wants to have a try now?----No one. 29、Don't keep talking,It's time for class. 30、When he saw his teacher,he stopped talking with his classmates.31、What is it on your left? 32、Please turn right in the second crossing. 33、May I borrow three books from the library?34、Do you often buy presents for your parents? 35、He has too much homework to do. 36、He bought two kilos apples. 37、He lives on fifth floor. 38、Before leaving,please remember to turn off the lights. 都是一些固定短语的用法和介词的使用，多记一些就行了
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