The sweet smell of the flowers in the garden comes in_______the open window，making us feel in a good mood(心情)．
A．on
B．with
C．through
（浙江杭州）My cousin went abroad at________age of eighteen．
| A．a |
| B．an |
| C．the |
| D．不填 |
There are________many students on the playground．I can hardly find Tom．
| A．so |
| B．such |
| C．very |
| D．pretty |
—Excuse me．what’s this for？
—It’s a cleaner and it________to pick up dirt．
| A．uses |
| B．is used |
| C．is using |
| D．used |
We believe scientists will________a way to solve the air pollution．
| A．set off |
| B．put off |
| C．come up with |
| D．catch up with |
Could you________the restaurant and order sortie take－away food for me？I’m a little hungry．
| A．call up |
| B．call on |
| C．call at |
| D．call for |