(2013·北京卷) Don’t turn off the computer before closing all programs you could have problems
The students __________ to follow the rules and study hard.
—Which one of these do you want? — __________. Either will do.
It was his first time to make a radio broadcast. __________, he walked towards the microphone.
—Did you enjoy yourself at the party? —Yes. I've never been to __________ one before.
He is very popular among his students as he always tries to make them __________ in his lectures.