7/ John has been working for 5 hours. He ......... be very tired. A. can B. may C.must D. should 8/ ....... you please be quiet ? I'm trying to concentrate. A. Shall B. Do C. Will D. Should 9/ .......... I carry the bag for you ? A. Shall B. Do C. Will D. Should 10/ Thanks for lending me the money. I ......... pay you back on Friday. A. can B. may C. will D. should

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