一Helen,willyoubeatthepartytonight? 一Yes,butIreally     ...

问题详情：

一Helen, will you be at the party tonight?  

一Yes, but I really        as I have so much homework to do．  

A．can’t                      B．shouldn’t                C．mustn’t                  D．won’t  

【回答】

知识点：虚拟语气与情态动词

题型：选择题