---Why do you keep the windows open on such a cold day? ---There are so many students here, so we want to keep the air nice and __.
My friends have given me lots of_______.They're very useful.
The teacher came into the classroom ___ a smile on her face. A. in B. to C. with
Do you know ______? Yes. It will take off at five. A. when the plane will take off B. when the plane took off C. when will the plane take off
.How do you like this film? Funny. I couldn’t help ____ when I watched it. A. laugh B. laughing C. to laugh
I think the price of house in Guang’an is _____than it in Nanchong. A. higher B. more higher C. most high