问题
选择题
—Must I return the hook tomorrow morning? —No, you _ .You can keep it longer.
A．mustn't
B．can't
C．needn't
D．couldn't
答案
答案：C
情态动词的考察 回答以must引导的一般疑问句，肯定回答用Yes，Sb. must . “是的，……必须”否定回答用No，Sb. needn’t“不，……不必”