[ Grammar ]
James used to be a careless driver. ______ he had a car accident did he know the importance of careful driving.
A. After
B. It was not until
C. Until
D. Not until

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Gerund after Prepositions and Certain VerbsModals of AdvisabilityGrammar for IELTSCan vs CouldConjunctions, Interjections and DeterminersPast Tense and Past ContinuousAuxiliary WordsReported Speech and Reporting VerbsContinuous TenseZero & First ConditionalOther quiz:
Present Tenses › ViewI will pay you back, I _____ , when I get paid.
A. promise
B. am promising
C. has promised
D. has been promising
Tenses › View
He ___ to the new city last month.
A. moves
B. moved
C. has moved
D. will move
Subject Verb Agreement › ViewThe Daily News _______ accurate information.
A. show
B. shown
C. shows
Modals › View
You……………be careful when you cross the street.
A. must
B. mustn’t