老师不在的时候,我们也能保持安静.We can keep quiet when the teacher ______ _

老师不在的时候,我们也能保持安静.We can keep quiet when the teacher ______ _ 老师不在的时候,我们也能保持安静. We can keep quiet when the teacher ______ 当我们在学校图书馆看书的时候,应该保持安静.We shoud _ the school library _ when w 观鸟的时候一定要保持安静._________________you keep quiet while watching 英语翻译看电影的时候,你必须保持安静.You ____ ____ keep quiet while watching t 老师叫我们上课保持安静.The teacher tells us ＿ ＿ ＿ in class . 英文 保持安静 be quiet?Or keep quiet? 在图书管我们必须保持安静We must ______ ______ _______ in the library keep quiet ,please.I can't ____ the teacher. 在教室我们需要保持安静 We must _____ ______ in the classes Keep ( ),the teacher came in ( ）（quiet) when the teacher speaks ,we have to keep quiet____