Have you ever ________ the Great wall?

In Great Britain it isn’t polite ______ from each other’s plate.

That bag isn’t mine. It may be __________.

They have been skating __________.

_______, what’s your hobby?

Would you mind _________ in class?

—________ have you been in this school?

—For two years.

Our teacher told us light _________ much faster than sound .

My father _________ Beijing on business for three days. He will be back in two days.

The price of this bicycle is quite _________. I don’t have enough money to buy it.