Jack, ______ to be here at 8 o’clock.

Bob ________to Harbin for a meeting yesterday.

Alex, how long ____________ you ___________ in this school?–For three years. I’ll graduate in July.

Did you find the small village yesterday?—Yes，without any difficulty，for it has ________ changed over years.

I do well in playing football, _______. (我妹妹也行。)