Next to the pots ___, upon which the man could work metal.
| A．lay a cushion stone | B．did a cushion stone lay |
| C．laid a cushion stone | D．did a cushion stone lie |
-The cars give off a great deal of waste gas in the street.
-Yes, but I'm sure something will be done to __________ air pollution.
| A．reduce | B．remove |
| C．collect | D．warn |
__________ either you or I to look after her?
| A．Am | B．Is |
| C．Are | D．Should |
The lion is considered king of the forest as it is a（n）__________ of courage and power.
| A．example | B．sign |
| C．mark | D．symbol |
Our enlarged school campus is __________ the old one.
| A．as three times big as | B．three times as big as |
| C．bigger three times than | D．as big as three times |
Many of the scientists and engineers are judged __________ how great their achievements are.
| A．in spite of | B．in ways of |
| C．in favour of | D．in terms of |