Since it was a summer time,we had a cookout,____ most of his American friends andSince it was a summer time,we had a cookout,____ most of his American friends and relatives were known to me.A.when B.where C.as D.which.我是这样认为的：we had a

Since it was a summer time,we had a cookout,____ most of his American friends andSince it was a summer time,we had a cookout,____ most of his American friends and relatives were known to me.A.when B.where C.as D.which.我是这样认为的：we had a
Since it was a summer time,we had a cookout,____ most of his American friends and
Since it was a summer time,we had a cookout,____ most of his American friends and relatives were known to me.
A.when B.where C.as D.which
.我是这样认为的：we had a cookout是插入的一个成分,____应该接修饰time的词,所以应该是A.我的想法哪里错了?这里用的语法是什么?

Since it was a summer time,we had a cookout,____ most of his American friends andSince it was a summer time,we had a cookout,____ most of his American friends and relatives were known to me.A.when B.where C.as D.which.我是这样认为的：we had a
本句修饰的先行词并不是time,而是指we had a cookout的地点.并且where在句中要充当一定的成分.从翻译的角度讲,是在那个他大多数的朋友和亲戚都认识我的地方.