We don’t understand the passage ______ there are few new words in it.

The students look______ and their teacher is looking ________ at them.

I was at the cinema at 9 o’clock last night. What about you — I _____ at home.

Excuse me, are you _______—No, we are _______.

(2013·山东，28)________I have to give a speech，I get extremely nervous before I start.