摘要： Some aspects of a pilot’s job be boring, and pilots often work at inconvenient hours. A. can; have to B. may; can C. have to; may D. ought to; must
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Some aspects of a pilot’s job _______ be boring,and pilots often _______ work at inconvenient hours.
A. can; have to B. may; have to?
C. have to; may D. ought to; must?
查看习题详情和答案>>Some aspects of a pilot's job be boring, and pilots often work at inconvenient hours.
A. can; have to B. may; can C. have to; may D. ought to; must
查看习题详情和答案>>Some aspects of a pilot's job be boring, and pilots often work at inconvenient hours．
| A．can ; have to | B．may ; can |
| C．have to; may | D．ought to; must |