Personally, the job as a teacher _____ be challenging, for I sometimes _____ deal with some smarter but less diligent students.
A.can; have to | B.may; can | C.has to; may | D.ought to; must |
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Personally, the job as a teacher _____ be challenging, for I sometimes _____ deal with some smarter but less diligent students.
A.can; have to | B.may; can | C.has to; may | D.ought to; must |