---May we leave the classroom now?
---No, you . You to leave until the bell rings.
| A．mustn’t, are allowed | B．don’t have to, are supposed |
| C．needn’t, aren’t allowed | D．can’t, aren’t supposed |
My favourite pet is _____cat. ______fur is grey and white.
| A．a...Its | B．the....Its |
| C．the...It’s | D．a...A |
—John, thank you for driving me home.
—_________. See you tomorrow.
| A．That’s right | B．I’m afraid not |
| C．You’re welcome | D．It’s a good idea |
—Excuse me, madam. Could you please tell me _________ the bus arrives?
—Sure. At 9:00.
| A．where | B．when | C．why | D．how |
—Must I sing the song in Russian?
—No, you _________. It’s up to you.
| A．mustn’t | B．can’t | C．don’t | D．needn’t |
We stopped _________, but there was not any sound.
| A．to listen | B．listens | C．listen | D．listening |