全国卷
17. I’m afraid Mr. Harding ____ see you now . he’s busy.
A. can’t B. mustn’t C. shouldn’t D. needn’t
⒘ I’m going to Europe on vacation together with John if I ___ find the money.
A. can B. might C. would D. need
6. Since nobody gave him any help, he have done the research on his own.
A. can B. must C. would D. need
