– Harry, are your new classmates ______?
– Yes. I like studying in the new class.
A. clever B. shy C. friendly
Mr Chen __________ his mobile phone to the shop because it can’t work at all.
| A．need to return | B．needs return | C．need returning | D．needs to return |
Computers have made a great difference _______ our everyday life.
| A．with | B．of | C．to | D．for |
After half a day’s hard work, we made our classroom look as _______ as new.
| A．well | B．better | C．best | D．good |
_______ provides many hours of air for astronauts in space.
| A．An air tank | B．A power pack | C．A helmet | D．A space sleeping bag |
We are wondering ________ we can prevent people from polluting the earth.
| A．who | B．that | C．whether | D．what |