Every possible means ________ to prevent the air pollution，but the sky is still not very clear.
| A．were using | B．have used |
| C．has been used | D．was used |
This skirt is made ________ your mother ________ her own measure.
| A．for; to | B．for; for |
| C．to; to | D．for; by |
—Excuse me, sir. Would you do me a favour?
—Sure. What is it?
—I _________if you could tell me how to pronounce this English word.
| A．had wondered | B．was wondering | C．would wonder | D．did wonder |
The detective_____the spy to_______.
| A．killed...dead | B．shoot......die |
| C．fired...dying | D．shot...death |
The woman sold the eggs ________ seven dollars and they were sold ________ half price.
| A．with, at | B．for, at |
| C．at, in | D．by, on |
I’ve kept up a friendship with a girl whom I was at school ________ twenty years ago.
| A．till | B．with |
| C．about | D．since |