[ 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

Random Topics:
Grammar - PunctuationGrammar, adverbs of frequency placementGrammar - to beObject PronounPast ModalsReflexive Pronouns & Modal VerbsDegrees of AdjectivesIntermediate PrepositionsPast simple vs Present perfectPast Perfect and Past Perfect Continuous TenseOther quiz:
Grammar › ViewI have lots of people’s messages and I don’t know most of them, I tried to ______my privacy settings but it didn’t work.
A. to change
B. changing
C. change
Present Simple and Present Continuous › View
Mum usually _______ milk in the morning, but today she _________ orange juice.
A. drinks, is drinking
B. is drinking, drinks
C. drinking, drinking
D. drinks, drinks
Grammar & Vocabulary › ViewWhich sentence is wrong?
A. I visited the Louvre museum.
B. I visited my best friend.
C. I visited a very popular city.
D. I visited a walk.
Grammar › View
She promised_________me a new guitar.
A. buying
B. to buying
C. buy
D. to buy
