I --------- promise anything,but I'll do what I can to help

问题描述：

I _________ promise anything,but I'll do what I can to help you． A．can not B．may not C．mustn’
I _________ promise anything,but I'll do what I can to help you．
A．can not B．may not C．mustn’t D．wouldn't

1个回答分类：英语 2014-09-18