阿摩線上測驗
4. Nowadays many online stores offer 24-hour services to answer all kinds of ________ from their customers.
(A) plights
(B) queries
(C) refunds
(D) squads
答案：登入後查看
統計： A(40), B(649), C(146), D(48), E(0) #1878873
統計： A(40), B(649), C(146), D(48), E(0) #1878873
