We use the past perfect to refer to actions that ...

★ Past Perfect Tense

We use the past perfect to refer to actions that happened _____ a specific time or another action in the past.

A. affirmative

B. before

C. negative

D. past participle

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By the time I __________ (be) 19 years old, I _____________ (win) a CD signed by my favorite artist.

A. am / won

B. was / had win

C. was / win

D. was / had won