[ Present Perfect Tense ]
Lisa . . . . my letter. Perhaps she is very busy.
A. didn’t answer
B. don’t answer
C. isn’t answering
D. hasn’t answered

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Past Perfect Tense and Past TenseGerunds, Infinitives and ParticiplesCountable QuantifiersModal Verbs & Reflexive PronounsGrammar: Have toGrammar - Present and Past PassiveGrammar and PrepositionComparatives and SuperlativesVerbs, Tenses, and VocabularyVerbs - third personOther quiz:
Grammar › ViewI didn’t know the reason ______________ I got in trouble.
A. when
B. why
C. how
D. where
Passive Voice › View
Transitive verbs have direct objects.
A. TRUE
B. FALSE