And then finally, after he told me everything, I realised ...

★ Past Perfect and Past Perfect Continuous Tense

And then finally, after he told me everything, I realised what _________ (happen) to him when he was a little boy.

A. had happening

B. had been happened

C. had happened

D. had been happening

Preview next quiz:

She ________ (teach) chemistry before she became a journalist.

A. had teached

B. had been teached

C. had been taught

D. had been teaching