[ Grammar & Vocabulary ]
Using eco-friendly cleaning products helps protect the environment from ______ substances.
A. harmful
B. helpful
C. healthy
D. active

Random Topics:
Conditional Sentences Type 1Zero ConditionalLexico and GrammarGerunds and InfitinitivesComparative AdverbsTenses with Time ExpressionsMixed GrammarConjunctivesSimple Past - Irregular VerbsModals of ProbabilityOther quiz:
Grammar › ViewHe only feels happy whenever he does not have much work to do.
A. The more he works, the happier he feels.
B. The less he works, the happier he feels.
C. He feels happier and happier with his work.
D. His work makes himfeel happy.
Grammar › View
I manage _____(submit) the final project on time. Otherwise I would have failed.
A. submitting
B. to submit
Grammar › ViewNow, the committee members … the whole material from all the attendants.
A. examined
B. examines
C. have examined
D. are examining
Punctuation › View
Which of the following does the contraction “would’ve” take the place of?
A. would of
B. would have
C. will of
D. will have
