[ Grammar ]
Mark __________ drying the dishes by the time Sam arrived.
(past perfect)
A. Had finished
B. Was finished
C. Have finished

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Personal PronounModal Verbs & Perfect InfinitiveModalSimple Past Tense and Past Perfect TenseVocabularyPresent, Past, Present Perfect and ComparativePerfect ModalsActive-Passive VoicesPresent Simple and Present ContinuousVerb Tenses (Progressive, Perfect)Other quiz:
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A. in
B. about
C. for
D. to
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A: Would you like some tea or coffee?
B: I ____ some coffee, please.
A. ‘ll have
B. ‘m going to have
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A. in the sun
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Helen: “What were you ________ at 10p.m last night?” Susan: “I ______ on my Math project at that time.”
A. do/ works
B. do/ worked
C. doing/ was working
D. does/ works
