Answers

2015-05-13T15:46:22+08:00
That was the (most difficult) test we had for years.
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2015-05-13T22:28:01+08:00
That was the most difficult test we had for years. "Letter C. most difficult" is the answer because there is comparison in the sentence. The word difficult must be in superlative form because the subject(that) is compared to a group(years).
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