阿摩線上測驗
15. "_ the platform gap," and "Please stay _ of closing door" are signs everywhere to be seen at Taipei MRT subway stations.
(A) Heed/ clean
(B) Attention/ cleanse
(C)Mind/ clear
(D) Notice/ close
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統計： A(0), B(1), C(1), D(0), E(0) #3443218
統計： A(0), B(1), C(1), D(0), E(0) #3443218
