Simon plays football every Monday and Thursday, so heplays ______a week.

I have no paper ______.

Do you know when the Chinese custom_________ from?–It’s hard to say. But its characteristics__________ the Tang Period.

Is it convenient if I call you up at 9 tomorrow morning?— I am afraid notI _____ a group of visiting teachers then

lege, you will discover ______ learning isabout, from teacher-taught to self-learner．