What is the comparative and superlative form of difficult?
More difficult and most difficult. With a word that long we don't generally add the -er or -est suffixes.
What is the comparative and superlative form of the word less?
Less is already the comparative form of little. The superlative is least.
Fill in the blank. "That is the (blank) thing I have ever seen!"
What is the comparative and superlative form for much?
The comparative form of much is 'more'. The superlative form of much is 'most'.
What is the superlative for bulk?
"Bulk" is a noun and a verb and, as such, does not have a superlative degree. If that was bulky, it would be bulkiest.