[ Tenses ]
The air in some big cities ____________________ more polluted
A. is becoming
B. becomes
C. will become
D. became

Random Topics:
First ConditionalFamily Members and Present SimpleVerb + InfinitiveVerb Tenses and UsageGrammar and PrepositionsCoordinating ConjunctionVerb and PrepositionModals and Active and Passive VoiceQuantifiers and ArticlesDefinite and Indefinite ArticlesOther quiz:
Grammar › ViewA teacher is a person ____teaches people.
A. who
B. which
C. where
Passive Voice and Relative Clauses › View
I haven’t had much fun when I was a kid.
A. had
B. much
C. when
D. was
Grammar - Place and Movement › ViewAnother word that means the same as ‘next to’ is ….
A. over
B. through
C. beside
Grammar and Vocabulary › View
Bill is going to …… his son from school and take him to basketball practice.
A. drop off
B. pick up
C. set up
D. point out
