A-A+
He didn't know German ______ made it difficul
问题详情
He didn"t know German, ______ made it difficult for him to study at a university in Germany.
A. that
B. as
C. which
D. this
参考答案
正确答案：C
答案为C。他不懂德语，这使他很难在德国的大学学习。非限定性定语从句，指代前一句的内容，关系代词在句中做主语。
