[ Grammar ]
You _________ introduce me to Dr. Gray. We have already met.
A. couldn’t
B. needn’t
C. mustn’t
D. shouldn’t

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Adjective or AdverbPresent and Future TensesGrammar Comma UsagePerfect Tenses of VerbsGerund NounVerbs & AdverbsPrepositions of Time & PlaceConditional Sentences and Verb FormPresent Perfect and Present Perfect Progressive TensesNoun PhrasesOther quiz:
Modal Verbs › ViewYou are not feeling well! You ___________ see a doctor!
A. may
B. should
C. can
Grammar › View
I have never played badminton before. This is the first time I______to play it
A. try
B. tried
C. have tried
D. am trying
a, an, the, Zero Article › ViewCould you get … phone? I’m really busy.
A. a
B. an
C. the
Ving - To V › View
Minh is interested in ________ (listen) to music before _____ (go) to bed.
A. listen / go
B. to listen / to go
C. listening / going
D. to listen / going
