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One of _______ most serious environmental problems is _______ pollution.
A. the,zero
B. a,the
C. an,the
D. zero
Random Topics:
Prepositional PhrasesSo or SuchConditionals / Unreal PastPunctuationsModal Auxiliary VerbsSubjective and Objective PronounCoordinating & Subordinating ConjunctionsComparison Degree & GerundsSo / Neither / Either / TooSubjunctiveOther quiz:
Verbs & Verb Tenses › View. What tense is shown in the sentence: “I will have graduated by June”?
A. Past tense
B. Present tense
C. Past perfect tense
D. Future perfect tense
Causative Verb › View
Yesterday, I _________ my mother to do the ironing for me. I was too tired!
A. get
B. got
C. getting
Grammar › ViewWhat is the correct spelling of chop + -ed?
A. choped
B. chopped
C. chopt
Passive Voice › View
What is the important rule in Passive Voice?
A. V1
B. V2
C. V3
D. V-ing