23?-Aha, I’ve graduated from college, and at last I can say good-bye to mathematics.
-But if you _____ well in maths at college, you’ll find economics(经济学),which has much to do with your future work, difficult to understand.
A haven’t done B don’t do C hadn’t done D didn’t do
选D why？？
Because I’ve something important to do, I can’t come to see you this evening, I’d like _____ to.
A?much as B?much so C?as much D?so much
选C why？
-I’ll be back at 4∶30.Will you still be here?
-I’m afraid not. I’ll probably have gone out _____ then.
A?by B?since C?from D?till
选Awhy？
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