30. Online shopping is easy and convenient but it can be __________ sometimes.
(A) reality
(B) safety
(C) risky
(D) lucky
答案:登入後查看
統計: A(204), B(398), C(3734), D(45), E(0) #362450
統計: A(204), B(398), C(3734), D(45), E(0) #362450