[ Grammar ]
Air pollution, together with littering, has _____ many problems in our large cities today.
A. caused
B. made
C. affected
D. brought

Random Topics:
InfinitiveSimple Tenses in EnglishVerb AbilityCardiology ServicesKinds of NounsPassive Voice - Present TensesSimple TensesGrammar and EssayConditionalsGerund - to InfinitiveOther quiz:
Conjunctions › ViewWe were very tired,_______ happy after our party.
A. but
B. so
C. or
D. because
Article › View
I had _____ sandwich and a banana for _______ lunch, but _____ sandwich was awful!
A. an / the / the
B. a / (-) / the
C. a / the / the
D. the / a/ a
E. the /the/the
Vocabulary › ViewTo approve and adopt an official document.
A. ratify
B. veto
C. appeal
D. submit
Present Tenses and Vocabulary › View
I’m going to roll up my ………………. and start cleaning the house.
A. sleeves
B. shirts
C. trousers
D. ties
