1、It was not until midnight _______ the reached the camp site.

Question

AthatBwhen
2、My most famous relative of all, _____ who really left his mark on America, was Reb Sussel,
my great-grandfather. [ ]
B. the one
D. someone

Answer 1

1、It was not until midnight 【A。that】 the reached the camp site.
这是强调结构句， 后面从句一般用that, 不用when，where 等副词

2、My most famous relative of all, 【B. the one】who really left his mark on America, was Reb Sussel, my great-grandfather. [ B ]
【B. the one】who really left his mark on America,是主语的同位语， 特指

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Answer 2

A that 此句考察强调句型， it is ……that，他们直到深夜才到达路宿营地。

B,对relative的限制说明，非限定性定语从句。哪一个亲戚啊，就是在美国名噪一时的那一个。

谢谢参考，望采纳！