题目内容：

Our school _____ the teachers about their teaching last week.A.made a survey of B.do a survey of
C.made a survey for D.do a survey for

优质解答

答案是 A made a survey of
首先是last week 上周 ,用过去时.survey 调查的意思,后面跟of 表示是关于什么的调查.