The shirt looks very nice. I guess it is _______ 100 yuan.
| A．at first | B．at most |
| C．at least | D．at last |
— It only takes me 20 minutes to get here by bike. Why don’t you ride a bike as I do?
— . I’m afraid I’ll have to ride a bike.
| A．I agree | B．I’d like to | C．I don’t think so | D．It’s not so easy |
I can’t tell when that house exactly, but it must be very long ago.
| A．is built | B．will build | C．was built | D．has built |
— you out the physics problem, Kathy?
— Not yet, but I’m going to.
| A．Do; work | B．Will; work | C．Had; worked | D．Have; worked |
— John, could you please the black-board now? It’s your duty today.
— OK. I’ll do it right away.
| A．not to clean | B．to clean | C．not clean | D．clean |
— You used to the bus to school, didn’t you?
— Yes, I did. However, I am used to to school now.
| A．take; walk | B．take; walking | C．taking; walking | D．taking; walk |