The old lady has a _______ time _______ clothes every day.
| A．difficulty; to wash | B．difficulty; washing |
| C．difficult; to wash | D．difficult; washing |
We should do more exercise to keep ______ fit.
A. we B. our C. ourselves
—I think classical music is pleasant.
—_______ I think it’s boring.
A.I agree. B.I think so. C.I don’t agree.
Let’s go swimming,_______?
A. don’t you B. shall we C. will you
She told us a story, and her voice sounded _______. We’re interested in it.
A. sweet B. small C. clearly
—Must I park my car behind the building?
—No, you _______. You _______ park it here.
A. mustn’t; may
B. may not; must
C. don’t have to; may