In those days he would go to Mr. Black and his family .A. where he was treated as part o

问题补充：

In those days, he would go to Mr. Black and his family, .

A. where he was treated as part of them

B. for whom it was good

C. that was the most important part of his life

D. with whom he had a wonderful time

答案：

A. where he was treated as part of them

B. for whom it was good

C. that was the most important part of his life

(答案→)D. with whom he had a wonderful time

解析：考查定语从句，这是非限制性定语从句，不能用that引导。先行词是his family，他的家人，A项也不对，B项意义不对，D项符合句意：在那些日子里，他会和布莱克先生和家人一起，他们在一起度过很愉快的时光。选D。