阿摩線上測驗
16. We _____ buy the ticket in advance; otherwise, we might not get our preferred seat.
(A) could
(B) should
(C) would
(D) might
答案：登入後查看
統計： A(2), B(14), C(1), D(0), E(0) #3860288
統計： A(2), B(14), C(1), D(0), E(0) #3860288
