If energy………inexpensive and unlimited, many things in the world would be different.
A. is
B. will be
C. were
D. would be

Random Topics:
Grammar, Literature, and VocabularyInterrogative PronounsGrammar and ReadingMust and Might ModalsPresent Perfect ContinuousZero & First ContidionalModals VerbsPast or Present Verb TenseVocabulary and TensesExpressing Obligation and ModalsOther quiz:
IELTS Grammar › ViewHe pretended __________ (be interested) in the conversation.
A. be interested
B. being interested
C. to be interested
Grammar › View
Is this sentence written correctly?
Cliff exclaimed, “Seventh grade is the best year yet!”
A. correct
B. incorrect
. She has ___ many books to carry.
A. to
B. too
C. two
Conditional Sentences › View
Binh is very busy, he cn’t help his wife with household chores
A. If Binh isn’t very busy, he can help his wife with household chores.
B. If Binh weren’t too busy, he could help his wife with household chores.
C. Provided that Binh weren’t very busy, he couldn’t help his wife with household chores.
D. As long as Binh is very busy, he can’t help his wife with household chores.
