18.Please remain __________ while the plane takes off.
(A) seated
(B) sitting
(C) sat
(D) seating

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統計: A(18), B(4), C(0), D(4), E(0) #667013

詳解 (共 1 筆)

#2651540
remain+adj.
(共 13 字,隱藏中)
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