阿摩線上測驗
24.“We are approaching some turbulence. For your safety, please keep your belts __________ until the ‘seat belt’sign goes off.”
(A) fasten
(B) fastened
(C) fastening
(D) be fastened
答案：登入後查看
統計： A(10), B(44), C(4), D(11), E(0) #666394
統計： A(10), B(44), C(4), D(11), E(0) #666394
