--Excuse me, teacher, can I ask you something about the last class? I didn’t quite understand it.--Sure! Please feel _________to ask me anything!
— Who teaches physics this term?— Miss Yang.
The young man is one of the best in the restaurant.
It’s hard work building a bridge over the river.
Tom and Jerry is one of those cartoons _____ you laugh.
— Do you know when Mr Wang back? — Sorry, I don’t know. But I’ll tell you as soon as he back.