-What colour is it?-It’s orange. It’s orange pen.
| A．a, an | B．an, an | C．/, an | D．an, / |
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
Look at the clock, what ____ is it?
A. classB. timeC. can