[ Grammar for TOEFL ]
There are geographic, economic, and cultural reasons why _____ around the world.
A. diets differ
B. do diets differ
C. are diets different
D. to differ a diet

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ConnectivesPronouns ( Interrogative )Tense,noun,preposition,quantityAdverbs of Time and PlacePast Simple & Past PerfectTenses and Sentence CompletionConditional Sentences Type I, IISuffixes (ing-ed) SentencesUsed toCan vs be able toOther quiz:
Vocabulary › Viewa strong drive for success
A. ambition
B. affection
C. disgrace
D. sincerity
Modal Verbs › View
People __________ go outside without a mask. (It’s not allowed)
A. can
B. must
C. have to
D. can’t
E. don’t have to
Grammar › View5 My boss……………..to Kota Bahru every month.
A. fly
B. flies
C. is flying
D. are flying
Subject Verb Agreement › View
In Greek Mythology, The Argonauts ________ a movie about Jason’s adventure to retrieve the golden fleece.
A. is
B. are
C. none of these
