阿摩線上測驗
30. The team made huge ______ to the new data management system.
(A) contribute
(B) contributions
(C) contributing
(D) contributed
答案：登入後查看
統計： A(6), B(17), C(2), D(2), E(0) #3887977
統計： A(6), B(17), C(2), D(2), E(0) #3887977
