I . 根据句意及所给首字母提示,补全句中所缺单词。 1. Mr. Green is busy now, but I will let you know when he is a . 2. Tim, you can’t leave u you finish your work. 3. Jim didn’t go to school yesterday because he had the f . 4. Joe did badly in the e . He only got 56 marks ( 分 ). 5. Walk quickly, or ( 否则 ) we won’t c the bus.