—Have you cleaned the room yet？
—Yes，I _______it an hour ago.
A.clean B.has cleand C.cleaned
—Are they ________ animals?
—Yes, there are few of them in the world now. We should protect them.
| A．spotted | B．aggressive |
| C．playful | D．endangered |
—Why do you like that band?
—Because they play ________ their own songs.
| A．mostly | B．strongly | C．possibly | D．Hardly |
—What’s electricity?
—It’s a form of energy _______ we use in our daily lives.
| A．who | B．which | C．where | D．Whose |
A student need a ________ place to study, but , in fact, some parents are always watching TV at that time.
| A．cleaner | B．quieter | C．safer | D．Smaller |
When the first settlers came to North America, they had to ________ the forest and found a way out.
| A．cut off | B．cut down |
| C．cut through | D．cut out |