We ___________________ (BE) worried about John because we ___________________ (CALL) ...

★ Past Perfect and Past Perfect Continuous Tense

We ___________________ (BE) worried about John because we ___________________ (CALL) several times but he never answered

A. were ; had called

B. was ; had called

C. had been ; called

D. be ; has called

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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