I was going through a GMAT question and stumbled across this question:
Never before had the gardening crew harvested so many carrots at once as it had in the fall of 2006.
The options contained:
D. as many carrots at once as it did in E. so many carrots at once as it did in
I marked (E) which was wrong but I don't know what is the difference between idiom
so ... as and
as ... as. Can someone please explain?