53 All youngsters were trapped inside because the night club had metal grilles on the windows and no fire
exits_________.
(B) available
(A) vulnerable
(C) capable
(D) valuable
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統計: A(15), B(8), C(1), D(0), E(0) #3007082
統計: A(15), B(8), C(1), D(0), E(0) #3007082