[ Quantifiers / Prepositions of Time and Comparative Adjectives ]
This math problem is ______ than the one we did yesterday.
A. more difficult
B. difficulter
C. most difficult
D. difficult

Random Topics:
Adverb of MannerGrammar - NounsSimple Past Tense and Present Continuous TenseArticles & PrepositionConjunctive Adverbs and PunctuationGrammar of Conjunctions and PrepotitionsPast and Perfect TensesTenses - Present and PastSimple Present - Negative & InterrogativeAdjective / Noun + to InfinitiveOther quiz:
Noun Clauses › ViewDo you know __________ from the earth?
A. how far the moon is
B. if how far the moon is
C. how far is the moon
D. whether how is the moon far
Grammar › View
I need my computer ___ send an important email.
A. to
B. for
C. so that