阿摩線上測驗
43 During the large public festival, additional police officers were hired to provide better ________ and ensured that everyone remained safe.
(A) authority
(B) quality
(C) evaluation
(D) security
答案：登入後查看
統計： A(0), B(0), C(1), D(14), E(0) #3930128
統計： A(0), B(0), C(1), D(14), E(0) #3930128
