_______________ is harmful to tress and forests as it contains a high level of acid in the form of water vapour.
A. oil spill
B. fossil fuels
C. toxic waste
D. acid rain

Random Topics:
Offer and SuggestionPerfect Verb TensesGrammar and VocabulariesV-ing/to-VTravel VocabularyTransitive or Intransitive VerbsAntonymsDefinite vs Zero Article Abstract NounsVerb PhrasesIndefinite PronounsOther quiz:
Grammar › ViewBefore we start playing, please read out _____.
A. the game’s rules
B. the games’ rules
C. the rules of the game
D. the rule of the game’s
Grammar › View
Choose the sentence with the correct comma placement.
A. Although I asked Angie to the movies last night, Rebecca ended up going with me.
B. Although, I asked Angie to the movies last night, Rebecca ended up going with me.
C. Although I asked Angie to the movies last night Rebecca ended up going with me.
D. Although I asked Angie to the movies last night Rebecca, ended up going with me.
Prepositions › ViewThe new policy resulted ___ an increase in productivity.
A. to
B. on
C. with
D. in
E. about
Conjunctions › View
Indicate the right conjunction: Andrea will cook dinner, __ Mauricio is going to buy the groceries.
A. and
B. but
C. or
