14. Passengers:
(A) may stretch their arms and neck out the window
(B) may not stretch their arms and neck out the window
(C) may stretch their arms and neck out the window on summer days, but not when the weather turns cold.
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統計: A(0), B(5), C(0), D(0), E(0) #2214475
統計: A(0), B(5), C(0), D(0), E(0) #2214475