21. Mrs. Hanson, a housewife bent on getting ________ higher education, has been going to college, a few courses at ________ time, for 7 years.
A. a; a B. 不填; the C. the；a D. 不填；不填
22.—Can we get the computer before Wednesday?
—_______. If it is within 30 kilometers, we can make it, but if further away, it will be on Thursday.
A. I don’t know for sure B. Well, that all depends
C. It’s up to you, sir D. There’s no rush
