Timothy _____ ______ _______ networking courses for two years when ...

★ Past Perfect and Past Perfect Continuous Tense

Timothy _____ ______ _______ networking courses for two years when he was promoted to be a coach.

A. had taken

B. had been taking

C. have been taking

D. could have taken

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Priscilla _______ _______ __________ information about an accident for two days, when the thief stole her notes.

A. had gathered

B. was gathering

C. had been gathered

D. had been gathering