英语高手快进来帮帮我Mary was running after Alice outside the gate of t

英语高手快进来帮帮我
Mary was running after Alice outside the gate of the library
A:Hi,Alice!Wait a moment.I wonder why the librarian stopped you
just now?
1._________________________________?
B:2._________________________________.
A:I'm sure you konw the book of the library can't betaken out.
There must be something wrong.
B:Of course,_____________________________at that time.I don't
mention it.
A:Oh,but no matter what you were thinking of other things.
4._________________________________.
B:Yes,you are right.I'll be careful next time.Thank you!
A:5._________________________________.
初二的英语知识