Topics: Word Form & Verb Tense
People can develop health problems and become ill if they breathe _____ air
A. pollution
B. to pollute
C. polluting
D. polluted
Select your answer:
Random Topics:
Lexico and GrammarCountable & Uncountable NounsGrammar - Present and Past PassiveSimple Present and Present Continuous TenseTensesModals for ObligationHabitual and Continuous TensesBe going to / WillGerund and InfinitivesNarrative TensesOther quiz:
Relative Clause › ViewThe boys ____ tennis over there are my new neighbor.
A. who plays
B. playing
C. that playing
D. are playing
Articles › View
Fill in the blanks with appropriate articles (a, an, the).
Charles Babbage is considered as ___ father of computers.
A. a
B. an
C. the