[ Grammar ]
The government has tried to limit the number of private cars _____ the problem of air pollution remains unresolved.
A. when
B. but
C. so
D. if

Random Topics:
Subordinate ConjunctionsGrammar (Possessive Pronouns)Subject Verb Agreement and Verb TensesPast Simple VerbsSentence Structure and Verb TensesSimple Present vs Present ProgresiveFormal & Informal WordsModals in the Past - Speculation and DeductionModals and Present TensesIf- ConditionalOther quiz:
Past Tenses › Viewwhich one is past perfect tense?
A. I saved my money to the bank
B. I had saved my money to the bank
C. I was saving my money to the bank
Perfect Tenses › View
Which of the following sentences is NOT in the present perfect tense?
A. Boom has lived here for five years.
B. Thee and Rinya have been to Paris.
C. Cheya is eating dinner.
D. We have finished our project.
TOEFL Adjective and Adverb › ViewOn July 4, 1776, the American colonies declared . . . independence from Britain.
A. it was
B. was their
C. with them
D. their
Mixed General Quiz › View
Macbeth is Shakespeare’s most violent play, so it is not ideal family entertainment.
A. compound
B. complex
