The air is ____hotter today than yesterday.
much
Correct
more
very
wholly
Explanation:
Correct Answer is: much
Two days (yesterday and today) are being compared in this case. This indicates, that we have to use a comparative degree in the given blank. The adjective is hotter . To indicate the intensity of the hotness `much` has been used in this case. Since hot is a word with a single syllable, the comparative degree would be hot + ter = Hotter and not more hot.