[ Grammar ]
Air pollution levels ___ dramatically since governments worldwide introduced stricter environmental laws.
A. decreased
B. is decreasing
C. decreases
D. have decreased

Random Topics:
Modals: Possibility, Necessity, ExpectationCoordinating and Subordinating ConjunctionsGrammar PhrasesModal Verbs and PermissionModal and Phrasal VerbsGiving and Asking for AbilityAdjectives and PrepositionsTransitional Phrases and ConjunctionsGrammar: Defining Relative ClausesConditional TypesOther quiz:
Pronoun › ViewMy friend Jasper, like too many students in our Basic French class, believes that _____ need to learn a foreign language.
A. They don’t
B. It doesn’t
C. He doesn’t
Grammar › View
Giraffes are animals …………………………………………………………………..
A. who can fly
B. which live in the ocean
C. which are very tall
D. who are very short
Grammar › ViewWhat ————- you —————–of this new TV?
A. are /thinking
B. is /thinking
C. were /thinking
D. do /think
Grammar › View
When did you ___________ your husband?
A. know
B. meet
