阿摩線上測驗
12. It is imperative that you _______ there by ten o’clock.
(A) be
(B) are
(C) being
(D) to be
答案：登入後查看
統計： A(112), B(66), C(55), D(11), E(0) #1696692
統計： A(112), B(66), C(55), D(11), E(0) #1696692
