阿摩線上測驗
21. Tina knew that the children were up to ________ when she saw them giggling.
(A) mischief
(B) concern
(C) misery
(D) conference
答案：登入後查看
統計： A(23), B(15), C(14), D(11), E(0) #3929886
統計： A(23), B(15), C(14), D(11), E(0) #3929886
