Please speak in a _______ , or the teacher will hear what you say.
A．voice B．whisper C．science D．sound
--Excuse me, I don't think you can smoke here.
---Really sorry. I ______ this is a non-smoking room.
A．didn't know B．don't know C．have no idea D．haven't known
The class ______ big. Now the class_______ practicing swimming.
A．are ;are B．is ;is C．is ; are D．are ; is
Each of us has to write a ______ report every three weeks.
A．two-thousand-words B．two-thousand-word
C．two-thousands-word D．two-thousands-words
_______ yesterday, our school organized a successful picnic in the countryside, with all the students and teachers taking part in.
A．As a fine day B．It was a fine day
C．It being a fine day D．For it was a fine day
—Do you have anything to say for yourselves?
—Yes, there is one point _________ we must insist on.
A．why B．where C．how D．/
