当你要了解别人是否喜欢游泳时，问：
A. Do you like swimming?
B. Do you like running?
C. Do you like pingpong?
Are those your shorts?_____.
A. Yes, it is.B. No, it isn’t.C. No, they aren’t.
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. onB. inC. at
It's 9:45. It's time ____ music class.
A. toB. forC. of