[ Grammar and Vocabulary ]
We are facing severe environmental pollution despite the fact that many world organizations are working hard to reduce it.
A. heavy
B. destructive
C. harmful
D. serious

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Sentence Structure and PunctuationPrepositions after Verbs and AdjectiveComparatives - SuperlativesModals in the PastConditionals 1,2,3If Conditional Zero and OneGrammar: Simple Past and Past ContinuousAsking & Giving AttentionGerundsNoun Clauses with THATOther quiz:
Grammar › ViewOn the News. ‘The President…………………shot.’
A. Is
B. Was
C. Had been
Grammar › View
It _______ outside, so take an umbrella.
A. rain
B. is raining
C. rains
D. rained
Modal Verbs › ViewShe __________ help them anymore. They are now old enough to handle things without her assistance.
A. shouldn’t have
B. didn’t have to
C. couldn’t have
D. must have
Vocabulary › View
to overcome by superior force, crush; to affect so deeply as to make helpless.
A. overwhelm
B. flexible
