[ Modal Verbs ]
I wonder who drank all the milk yesterday. It _____ have been Mary because she was out all day.
A. can’t
B. must
C. could
D. needn’t
Select your answer:

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Linking Words & PhrasesConditional Sentences and AdverbsPrepositions of Time & PlaceGrammar: Parts and PunctuationWill and Going toReported SpeechVerb Tenses and UsageTenses and Passive VoiceAdjective Clause and Adverb ClauseIELTS VocabularyOther quiz:
Grammar › ViewWe plan __________ a picnic next weekend.
A. to go to
B. goes
C. to go
D. going
Present Continuous › View
He ___ learning English.
A. is
B. are
C. was
