The passengers are asked to keep their seat belts _____ during the flight. 
(A)to fasten
(B)fastening
(C)fastened
(D)be fastened

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統計： A(24), B(66), C(217), D(49), E(0) #397154

詳解 (共 6 筆)

#655071
總覺得還是有點不太對....有高手可以解釋一下文法嗎？感覺比較像keep their seat belts being fastened，然後being被省略。
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#545033
乘客被要求保持他們的安全帶固定在飛行過程中。
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#3693081
S + Vt + O +OC S + ...
(共 156 字，隱藏中）
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#2989928
首先 seat belts (which...
(共 103 字，隱藏中）
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#738175

Please keep your seat belt fastened and put your seat is the upright position.
請繫牢安全帶，並使座椅直立

The air conditions are uncertain. Please fasten your seat belts.天氣狀況不穩定，請繫牢您的安全帶

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#555729
seat belts (which are )fastened
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