He ___ his leg when he __ in a football match against another school.
| A．broke, played | B．was breaking, was playing | C．broke , was playing | D．was breaking, played |
Saving and recycling are long-term projects ____ determination matters a great deal.
| A．that | B．which | C．whose | D．where |
You needn’t have come in person --- a letter _____enough.
| A．would be | B．is | C．would have been | D．was |
--- What should I do with my paper, Mr. Jason?
--- Well, what I have said about Peter’s _____ yours.
| A．goes for | B．goes through | C．goes up | D．goes over |
I heard that some patients who had undergone laser eye surgery experienced sudden losses of vision, ______?
| A．didn’t I | B．hadn’t they | C．didn’t they | D．isn’t it |
--- I rang you at about ten, but there was no reply.
--- Oh, that was probably _____ I was seeing the doctor.
| A．for | B．why | C．when | D．how |