問題詳情

32. 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

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)