[ 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

Random Topics:
Perfect Verb TensesTenses: Present simple, Past Simple, Future SimpleSimple Past TensesNoun, Adjective, and Adverb ClausesPast and Perfect TensesGrammar - much, many, a lot ofSentence Structure and ConjunctionsPresent Simple: affirmative, negative, interrogativeOrdering AdjectivesVerbs & Verb TensesOther quiz:
A(n), the, no article › ViewCan you turn off ___ light and close ___ door, please?
A. the / the
B. a / the
C. the / a
Comparative Adjectives and Adverbs › View
I used to feel as __________ as a bird when I was younger.
A. free
B. busy
C. early
D. late
Relative Clause › ViewI hope the police will catch the thief __________ stole your wallet.
A. who
B. whom
C. which
D. whose
Adjective Clause › View
None of the house ___ have protective shutters were damaged in the typhoon.
A. who
B. they
C. which
