---_______, your key is on the desk over there. ---Thank you.
A. Look B. Look at C. See
Is this your T-shirt? ______.
A. Yes, it is.B. No, they aren’t. C. Yes, they are.
Can I wear my T-shirt?_____
A. No, you can't. B. Yes, you can't. C. No, you can.
It's cold ____ Beijing.
A. on B. in C. at
It's 9:45. It's time ____ music class.
A. to B. for C. of
Look at the clock, what ____ is it?
A. class B. time C. can