XDF第1，2套语法题目请教

1Although) there are more than 2000 different (variety) of candy, many of them are  made from a (basic) boiled mixture (of) sugar, water, and corn syrup.

B选项不会是把它改成 various of 吧？记得variety of 这个搭配是对的啊

2The capital of) the United States, (originally) New York City, (was moved) to Philadephia (where stayed) until 1800.

请问B选项为何会用副词？修饰New York City?

3:No one knows exactly.......

A:how did speech begin.

B:how speech began.

C:how the begining of speech.

Df how beginning speech.

遇到这种题目完全抓瞎...

4:Margaret Mead achieved world (famous) (through) her studies of child-rearing, (personality), and (culture).

请问A选项在这里如何更正？

1，a variety of ..一种。。。-》varieties of..多种的。various  adj=different

2,originally=at first ，修饰的是整个句子；如果用original NYC 意识是最早的nyc,也可以，同位关系。

3，这是（特殊疑问词+正常语序的句子）做宾语。挨个排除，1）疑问词后一定要是主语，A，D错2）疑问词后一定是正常语序，并且是个完整的句子C错

非常感谢！

2The capital of) the United States, (originally) New York City, (was moved) to Philadephia (where stayed) until 1800.

想顺便问一下D错了要怎么改？