阿摩線上測驗
31. The new ________ cameras were installed to enhance the safety of the neighborhood.
(A) appetite
(B) security
(C) happiness
(D) accomplishment
答案：登入後查看
統計： A(0), B(59), C(3), D(3), E(0) #3930819
統計： A(0), B(59), C(3), D(3), E(0) #3930819
