---I _________ stay up late. ---Really? I didn’t. But I ______ working in the night.
| A．am used to, am used to | B．used to, used to |
| C．am used to, used to | D．used to, am used to |
It’s really cold today, ______ ?
| A．does it | B．doesn’t it | C．isn’t it | D．is it |
---He’s never been to an aquarium.
---_______.
| A．Neither have I | B．Neither do I | C．I never too | D．I don’t too |
Would you mind ______ those old jeans?
| A．don’t wear | B．not to wear | C．aren’t wearing | D．not wearing |
I have been skating _______ nine o’clock.
He _____ when the UFO arrived.
| A．was sleeping | B．were sleeping | C．has slept | D．is asleep |