Itisgoodforyoutokeep的精选

问题详情： Itisgoodforyoutokeep_______whenyouhavesomethingdifficult_______.   A.trying;todo   B.trying;doingit   C.trying;tobedone    D.totry;doingit【回答】A知识点：相似相近词比较题型：选择题...