27.Children must be kept under permanent .
(A)attention
(B)observation
(C)control
(D)care

答案：登入後查看
統計： A(32), B(99), C(40), D(33), E(0) #1187217

詳解 (共 1 筆)

#3229165

依SMCP
Children must be kept under permanent observation. 

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