6．用情态动词填空。教师口述，读到需填空处时在黑板上划短底线，学生口头回答：

（1）――It is four o'clock now．____I go back home？――Certainly．

（2）――Oh，I am busy．I____ go to the cinema with you．

（3）――____I answer the question in Chinese？――No，you____．You must answer the question in English．

（4）――____we hand in the exercises after class？――Yes，you must．

（5）――You____ tell him the bad news now．

（6）――Must we finish our homework now？――NO， you____．

（五）巩固性练习