[ Modal Verbs ]
It _____ be a good idea to double-check your work before submitting it.
A. can
B. may
C. must
D. should

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ConnectorsPast simple regular verbsSubjunctivesVerbs + Gerund or InfinitiveGerund and InfinitiveGrammar and StructurePrepositions of Location, Movement and TimeModal Verb, Passive VoiceTenses and ConclusionsVocabulary Spelling GrammarOther quiz:
Tenses › ViewUsually, my grandpa _________ to my parents; but right now, he __________to me .
A. is talking; talks
B. talks; is talking
C. are talking; talk
D. talks; was talking
Modals in The Past › View
My bicycle is broken now. I ___ ridden it down the stairs.
A. musn’t have
B. might have
C. shouldn’t have
D. can’t have