阿摩線上測驗
5. Using homemade natural cleaners, like vinegar and baking soda, can reduce the amount of chemicals ________ into the water system.
(A) transferred
(B) introduced
(C) emitted
(D) spread
答案：登入後查看
統計： A(0), B(0), C(1), D(0), E(0) #3984995
統計： A(0), B(0), C(1), D(0), E(0) #3984995
