阿摩線上測驗
32. The customer service representatives ___________ at the receptionist desk for product introduction.
(A) always are available
(B) are always available
(C) are available always
(D) being always available
答案：登入後查看
統計： A(1), B(5), C(0), D(0), E(0) #4063890
統計： A(1), B(5), C(0), D(0), E(0) #4063890
