________about the exact address of the teacher,we had great trouble finding his flat
A Not being informed B Not having been informed
C Not having informed D Having not informed
人气：380 ℃ 时间：2020-05-14 20:09:03
解答
选b
首先not应放在doing前；第二本句的意思是“我们未被告知”是被动句,所以要用be informed;第三注意后面句子用的是过去式had,所以要用having been done
推荐
猜你喜欢
