Topics: Past Perfect Simple & Past Perfect Continuous
I realized that I (forget) to thank them.
Which is the correct past perfect simple for the sentence above?
A. had forget
B. has forgotten
C. having to forget
D. had forgotten
Select your answer:

Random Topics:
Synonyms and VocabularyConjunctions and PrepositionComparatives, Superlatives & EquativesVocabulary Spelling GrammarComparisonThird Grade ExamPrepositional PhrasesModal and Relative PhrasesTenses of Verbs - UsageAdjectives and comparisonsOther quiz:
Grammar › ViewTo ________ should I give this parcel ?
A. who
B. whom
C. whose
D. which
Question Tags › View
You like chocolate, don’t you?
A. Yes.
B. I prefer vanilla.
C. No way!
D. Chocolate is overrated.
