the poor child had to --- food from door to door A.ask for B.beg C.ask D.beg for
问题描述：
the poor child had to --- food from door to door A.ask for B.beg C.ask D.beg for
答
D
beg for food 乞讨食物
贫穷的孩子必须要挨家挨户的乞讨食物.