選b
首先not應(yīng)放在doing前；第二本句的意思是“我們未被告知”是被動(dòng)句,所以要用be informed;第三注意后面句子用的是過去式had,所以要用having been done
________about the exact address of the teacher,we had great trouble finding his flat
________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
A Not being informed B Not having been informed
C Not having informed D Having not informed
英語人氣：754 ℃時(shí)間：2020-05-14 20:09:03
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