The shirt looks very nice. I guess it is _______ 100 yuan.
| A．at first | B．at most |
| C．at least | D．at last |
A has beautiful feathers . And it can sing nicely.
| A．cat | B．parrot |
| C．goldfish | D．dog |
Peter, you should leave the light when you’re out.
| A．off | B．closed | C．on | D．open |
I think it’s unusual thing to find a UFO.
| A．a | B．an | C．the | D．不填 |
The young lady________ is talking with our teacher comes from America.
| A．who | B．whom | C．which | D．whose |
Waste paper mustn’t _______. We should keep our environment clean.
| A．throw away | B．thrown away |
| C．be thrown away | D．been thrown away |