問題詳情

21. The latest guidance from the Centers for Disease Control and Prevention (CDC) says _____ is one of the mosteffective ways to prevent the spread of diseases and infections.
(A) you wash your hands
(B) by washing your hands
(C) washing your hands
(D) remember washing your hands

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增