A. can be B. may be
C. must be D. can’t be
5. Johnson kept working hard at computer studies and it _______. He got high income.
A. took off B. paid off
C. gave off D. came off
6. There is hardly any doubt ______ Jimmy will come to join us in the party in time.
A. that B. when C. which D. whether
7. I suggest you ______ him once more. His puzzled look suggests he _______ what you said.
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