[ Grammar ]
Nina can’t answer the door right now because she ………… to her parents on her computer.
A. ‘s speaking
B. speaking
C. speaks

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Verbs - third personGrammar (Possessive Pronouns)Modal Auxiliary VerbsPRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTVerb, Object, PrepositionRelative Clauses and Past PerfectPrepositions after Verbs and AdjectiveProgressive Verb TensesPast Tense & Past Continuous TenseNoun Clauses with THATOther quiz:
Grammar › ViewI have to ….. before examination.
A. Study
B. Studying
C. Studies
D. Studied
Modal Verbs › View
I’m sure Linda was very upset when you left.
A. Linda could have been very upset when you left.
B. Linda must be very upset when you left.
C. Linda may be very upset when you left.
D. Linda must have been very upset when you left.
Grammar › ViewI am a collector, I … many different buttons at home.
A. have
B. has
Perfect Modals › View
He _______________ (finish) a 500-page book in a single day!
A. must have finished
B. could have finished
C. can’t have finished
D. should have finished