When we went to Osaka, my friend _______ a lot ...

★ Past Perfect Tense

When we went to Osaka, my friend _______ a lot about the city because she _______ there many times.

A. Was, had known

B. Had known, was

C. Knew, had been

D. Had been, knew

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We arrived at 8:05, but the train _____ already left.

A. has

B. have

C. had

D. hadding