[ Grammar ]
Pollutions are harmful __________ human health.
A. to
B. at
C. with
D. on

Random Topics:
Verbs: Action, Linking, and HelpingPresent Perfect SimpleCan/CouldCommon & Proper Nouns-ing / InfinitivePast, Present, FutureGrammar and VocabulariesTo Infinitive or GerundPresent Progressive (Future)Past Tense & Present Perfect TenseOther quiz:
Grammar › ViewMinerals that are very ………. like diamonds and rubies are usually very expensive.
A. rare
B. superior
Vocabulary and Grammar › View
What term means “to make forward movement or improvement”?
A. progress
B. innovation
C. principle
D. take into account
Hope, Thank, Modal Verbs › ViewChoose the correct modal verb: “You ___ not smoke in this area.”
A. could
B. should
C. would
D. must
Grammar › View
Choose the correct pronoun for the sentence: “Tom and ____ are going to the party.”
A. Me
B. I
C. Myself
D. Mine
