单项选择题
A.I don't mind B.It doesn't matter C.You do it please D.Go ahead
May I borrow your umbrella for a moment?（）A.No, you can...
单项选择题May I borrow your umbrella for a moment?（）
A.No, you can't do it B.Sorry, but you may not C.Well, I am afraid I am going to use it myself D.Of course not. I'm going to need it myself
May I ask you a question?（）A.Yes. you need B.Yes. ...
单项选择题May I ask you a question?（）
A.Yes. you need B.Yes. ask C.Yes. please D.Let me see
Mathematics（）study or science of numbers.A.is B.are ...
单项选择题Mathematics（）study or science of numbers.
A.is B.are C.was D.were
