[ Grammar ]
We _____ at the stop for 20 minutes before the bus appeared.
A. had stood
B. have been standing
C. had been standing

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Interrogative PronounsTime Clauses of FutureTemporal Conjunctions and ConnectivesBasic GrammarComparativesCoordinating Conjunctions and Comparative AdjectivesAdjectivesLexico and GrammarPossessive Adjective and PronounVocabulary and Sentence StructureOther quiz:
Grammar › ViewIdentify the preposition in the following sentence:
Jacob had to stay for 8th hour since he was not passing his math class.
_
A. since
B. was not
C. had
D. his
Future Tenses › View
By this time tomorrow, she __________ for 10 hours straight.
A. will be working
B. is working
C. will work
D. works