阿摩線上測驗
10. Cellular phones certainly have the _____ of being very convenient especially when you have an emergency.
(A) mask
(B) merit
(C) motion
(D) muscle
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統計： A(0), B(2), C(2), D(0), E(0) #3363591
統計： A(0), B(2), C(2), D(0), E(0) #3363591
