[ Grammar ]
How long ___ before they realised they were going the wrong way?
A. they had been sailing
B. had they sailed
C. had they been sailing

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Correlative conjunctionsCoordinate Conjunctionand, so, but, becauseGRAMMAR - Could / Could notSimple Past Tense & Future TenseBe used to vs used toVerbal CommunicationIdentifying TensesLinking VerbsGerunds, Infinitives and ParticiplesOther quiz:
Grammar › ViewThe Pulitzer Prize honors the best works of journalism each year. They rank among the most prestigious writing awards in the world.
A. NO CHANGE
B. It ranks
C. Those rank
D. Theirs rank
Grammar › View
March, April, May ______, July.
A. June
B. January
C. August
D. September
Grammar › View_____ me to email Danny. I need to give him directions to your house.
A. remind
B. remember
C. Notice
Grammar › View
We use Past Perfect for?
A. something that happened again and again.
B. for something that started in the past and continued up to a given time in the past.
C. something that happened once in the past
