阿摩線上測驗
4. We can ensure a safe and enjoyable holiday season by _____ to these precautions.
(A) reverting
(B) adhering
(C) contributing
(D) subscribing
答案：登入後查看
統計： A(0), B(4), C(1), D(2), E(0) #3412500
統計： A(0), B(4), C(1), D(2), E(0) #3412500
