6.
(A) invented
(B) have invented
(C) had invented
(D) has been inventing

答案：登入後查看
統計： A(6), B(3), C(36), D(1), E(0) #1725394

詳解 (共 1 筆)

#4015904


(共 1 字，隱藏中）
前往觀看
0
0