．Sorry,sir. I broke the window glass, but I didn’t do that ______.

Have you _______it?’ —Sorry. Would youplease explain it for a second time?

It is said that Mr Wang has won first place in the English contest for teachers.—________ and ________ one day.

He is _______ in class and has _________ for two hour.—He is so tired these days preparing for the mid-term exam.

Having retired(退休), he ______ the club for old men and plays chess every day there.