[ Modal Auxiliary ]
My hands are full.I____________answer the phone right now.
A. can’t
B. might not
C. couldn’t
D. must

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Personal & Possessive PronounsPassive of Modal VerbsPresent Perfect and Present Perfect Progressive TensesTOEIC Tenses, VerbsFirst Conditional SentencePhrasal Verb and ModalAdjective ClauseSynonym and AntonymPassive SentenceDegree of ComparisonOther quiz:
Grammar › ViewTourists enjoy traveling ________ boat along the Mekong river .
A. on
B. by
C. at
D. to
If Clauses › View
Let’s go swimming. No, it’s too cold. If it _________ warmer, I wouldn’t mind going for a swim.
A. is
B. will be
C. had been
D. were
Object Pronoun › ViewThat girl is my friend. I’ve known …for years.
A. her
B. him
C. them
D. us
Perfect Tenses › View
What are the signal words for the Past Perfect Tense?
A. yesterday, last week, ago
B. soon, later, tomorrow
C. before, after, when
D. by the time, by, in 2015