I’d appreciate ___________ if you could let me know in advance whether or not you will come.
| A．you | B．this | C．one | D．it |
— Why weren't you at the meeting?
— I ________ for a long distance call from my sister in America.
| A．was waited | B．was waiting |
| C．has waited | D．have been waiting |
We have done things we ought not to have done and ________ undone things we ought to have done.
| A．left | B．leave |
| C．will leave | D．leaving |
Paper produced every year is ________ the world’s production of vehicles.
| A．the three times weight of | B．three times the weight of |
| C．as three times heavy as | D．three times as heavier as |
The two ladies are ________ the same age, but there seems to be ten years ________ them.
| A．at, between | B．about, among |
| C．as, among | D．of, between |
I planned ________ to see you last week, but I was ill.
| A．to have come | B．to come |
C．to be coming | D．to have been coming |