Every possible means __________ to prevent air pollution, but the sky is still not clear.
| A．are being used |
| B．have been used |
| C．has been used |
| D．had been used |
They are considering ___ to the countryside to work.
| A．to be sent | B．to send | C．being sent | D．sending |
This pen is ___ mine, ___ his.
| A．never, except | B．nor, also | C．not, but | D．not, or |
The flowers in the garden smell ___.
| A．well | B．good | C．nicely | D．fairly |
Glass is made __ all kinds of bottles.
| A．from | B．in | C．of | D．into |
The desks he made are ___ more expensive than these I saw.
| A．quite | B．very | C．rather | D．fairly |