Hi, my 2 cents....
from recent developments of GMAC, (read through threads in forum) meaning plays a very significant role in SC. It is extremely important to understand the intended meaning of the sentence, with the fragment you mentioned, it is hard to analyze the concrete meaning, thus I cant respond on this example. But,as observed otherwise, most correct choices of SC will have the unambiguous meaning of the sentence with corrected grammar errors (there are very rare and few exceptions viz; pronoun referents - not a very stringent rule I read in posts and blogs, but this is very rare, else all other choices stand corrected with grammar errors)
In case you are still not able to relate then may be you are mis reading the intended meaning of the complete sentence, please post specific questions for review
"When the going gets tough, the tough gets going!"
Bring ON SOME KUDOS MATES+++
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