Will someone go and get Dr White —He’s already been _________.

I am sorry to have kept you ___________.—It doesn’t matter. I’ve just come.

The number of students in our school _________ 4000 and a number of them _______ good at playing Ping-Pong.

下列对有关典故的分析，不正确的一项是

________ you kept your mobile phone on insuch an important exam It’s against the school regulation