* "extent TO" is unidiomatic; it should be "extent OF".
* "degree THAT" doesn't work. since things happen TO a degree, you have to preserve this preposition; therefore, you have to say "degree TO WHICH".
present X Y = present Y to X
presents a problem a response = presents a response to a problem
to which the argument assesses是修饰response的
BF2就是main conclusion，not support
“a possible workshop” is a hoax: I mean, think about it. There can be “a ballet workshop,” “an acting workshop.” How can there be a “possible” workshop? Is “possible” a kind of workshop? It makes no sense. The sentence speaks of a site that was possibly a workshop.
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本题最重要的是需要知道each除了可以单独做代词之外，还可以做同位语，例如：
We each scored high in GMAT。