阿摩線上測驗
2. It is obligatory for all employees to wear protective clothing.
(A) compulsive
(B) mandatory
(C) ultimate
(D) urgent
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統計： A(3), B(2), C(0), D(1), E(0) #3313175
統計： A(3), B(2), C(0), D(1), E(0) #3313175
