—Liu Qian is good at doing the tricks with the cards.—Yes, but if you watch carefully, you can see _______he does them.

 —I’m worried about the coming test. —You should work hard for it,_____you’ll have to take it again.

 --_______does it take you _______to school every day? –About twenty minutes. 

It’s good to give our seats _________ the bus ________the __________.

In our English class, the English teacher asked us to stand up and introduce__________.