[ Modal Verbs ]
. Which modal verb is used to express a strong obligation?
A. could
B. might
C. must
D. can

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Articles with SubstancesReflexive pronounsVocabulary, Grammar, SpellingNoun, Quantifiers and SuffixesVerb Tenses and Subject Verb AgreementConditional Sentence Type 2 and Type 3Present Simple and Modal VerbsPast Simple and Past ProgressiveModal "Have to"Countable - UncountableOther quiz:
Past Tense › ViewI (visit) my parents last week.
A. visits
B. visited
C. visiting
Grammar › View
I ____ from the USA.
A. am
B. is
C. are
