You have to explain ____ us the reason _____ your being absent from school yesterday.
| A．to; of | B．to; why | C．for; that | D．to; for |
Twofifths of the highway________so far.
| A．has been completed | B．was completed |
| C．have been completed | D．has completed |
I think whoever makes________contributions to the company than others should get________ income.
| A．greater；the higher | B．more greater；a higher |
| C．greater；the highest | D．more greater；the highest |
We are eating________vegetables per person today as they did in 1910.
| A．more than twice | B．as twice as many |
| C．twice as many as | D．more than twice as many |
Our foreign trade has________greatly in recent years .
| A．grown | B．increased | C．broadened | D．expanded |
It seems that living green is ________easy and affordable. A small step makes a big difference.
| A．exactly | B．fortunately |
| C．surprisingly | D．hardly |