How long may I keep the bookLesson 9 Clap your HandsPlease return it tomorrow.I want to borrow a book.I want to borrow your pencil.Please return it next week.You’d better return the book in two weeks.You can keep the books for two weeks.—how long‘ 多长时间’How long do you go to zoo ?How long does he go shopping?-must 比 had better to语气更强硬更有命令性homework What must we doif we can't finish it? 再见
