The more polluted the environment, the less safe it becomes for the animals.
A. If the environment is more polluted, it becomes better for the animals.
B. Animals find the more polluted environment safer.
C. Animals become less safe with a more polluted environment.
D. Animals become safer with a more polluted environment.

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Grammar and Sentence CorrectionTenses and Verb FormsZero & First ContidionalDaily Routines & TensesEnglish MorphosyntaxTime ConjunctionsSimple Past or Past ContinuousCoordinating & Subordinating ConjunctionsNoun ClauseEmployment VocabularyOther quiz:
Perfect Tenses › ViewShe (visit) her Japanese relatives once in 1993 before she moved in with them in 1996.
A. had visited
B. has visited
C. will have visited
Grammar › View
The __________ scientist continued his research in secret.
A. famous
B. infamous
C. notable
D. anonymous
Grammar › ViewYou’ll need a jacket, ___ you might get cold.
A. that is
B. by the way
C. all in all
D. otherwise
Adjectives-Comparison, Superlative › View
The boy needs __________ balls for that activity.
A. five cotton small
B. five small cotton