[ 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 › ViewShe ________ a cat.
A. have
B. has
C. haves
Past Tense › View
I ……………. to go swimming but the water was too cold.
A. want
B. wanted
C. am wanting
D. have wanted
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