请帮忙帮我分析一下这个英文句子
He is Chinese___and Russian by marriage
请问应该选以下哪个答案,如何翻译这个句子:
A by sight B by nature
C by youth D by birth
Tom was frightened to find that there was only one other guest___himself.
,为何不选择A呢?
A except B besides C except for D by