braveMBA,thanks for your response. 80. 2)if "add" is put, should we replace "as" with "that"?
218. the two parts have the different subjects and tense
thx!
以下是引用braveMBA在2003-9-7 12:10:00的发言: 80. 1) No, you can not, because it is not a sentence after "that" . 2) Yes, the better one should include "did", but if you have to choose the better one in provided choices, then A is the best of them. 3) No, you can not use "those", because there is no referent. Pay attention to this point, we should not use pronoun according to our minds, while we have to find the clear referent. You know, "civilization" appears in the foregoing sentence, so we have to use "civilizations".
198. I agree with you. However, if omitted, the sentence does not mean wrong.
218. I think, in 250, there is another important reason for us to fill "that". Have you noticed that the tense of each part is different, so it had better to use another "that" to eliminate the irrationality of the parataxis. But in 218, the two parts are same in subject, predicate , as well as tense. So, I think it is right.
222. It is a hyperbatic structure, or "[withhold] the identities of its sources of intelligence information [from the public] ". Do so only because "withhold" is too far from "from the public". This is common in ETS sentence.
Aboved mentioned reasons are all my own opinions, hope those help you.
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