[ 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:
Grammar › ViewThey were deeply shocked _______ her rebellious behavior.
A. for
B. with
C. to
D. at
Modals and Semi-Modals › View
You ____ shout at your teammates! It’s wrong!
A. may not
B. mustn’t
C. have to
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
