5 Weather is _____, so it is unwise to travel without checking the forecast.
(A) unparalleled
(B) unpredictable
(C) unprecedented
(D) unproblematic
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統計: A(2), B(72), C(4), D(0), E(0) #2674691
統計: A(2), B(72), C(4), D(0), E(0) #2674691