[ Adverbs ]
There is a decrease in air quality __________ petrol cars are emitting toxic gasses.
A. because
B. because of
Select your answer:
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Vocabulary & Grammar › ViewWhat time__________?
A. it is
B. it does
C. is it
Modal Verbs › View
Students ___ speak during the exam.
A. mustn’t
B. shouldn’t
C. mightn’t
D. can’t