阿摩線上測驗
30.There is plenty of research ____ that coffee doesn’t cause cancer. It can
prevent liver cancer.
(A) shows
(B) shown
(C) showing
(D) be shown
答案：登入後查看
統計： A(9), B(6), C(28), D(1), E(0) #3276197
統計： A(9), B(6), C(28), D(1), E(0) #3276197
