[ Tenses of Verbs - Usage ]
Choose the correct Structure of the Past Perfect tense
A. have + past participle
B. had + past participle
C. had + past simple
D. has + past participle

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Helping and Linking VerbsTOEFL GrammarDependent ClausesGrammar (Possessive Pronouns)Noun Clauses with THATSentence Structure and Grammar RulesPast Simple, Past Continuous, Past Perfect, Past Perfect ContinuousSo, Such, Many, MuchGerunds, Infinitives and Modals of PossibilityNarrative Tenses & ConditionalsOther quiz:
Vocabulary and Grammar › Viewwhat is the past participle of the word “freeze”
A. froze
B. frozen
C. frizen
D. freezed
Perfect Tenses › View
Lewis: I __________ you an invitation email two days ago.
Danny: Really? I __________ my email.
A. didn’t send / checked
B. sent / didn’t checked
C. sent / didn’t check
D. didn’t send / checked
