[ Modal Verbs ]
They ___ be on vacation. I saw their house was locked up.
A. can
B. must
C. may
D. might
Select your answer:

Random Topics:
Linking Words & PhrasesGrammar - some / anyUse of Prepositions or ConjunctionsAdjective OrderModal and Auxiliary VerbsPresent tense AffirmativePreposition and Preposition PhraseCompound SentencesSimple vs Present Continuous TensesPunctuating ClausesOther quiz:
Tenses › ViewShe always ________a sad look on her face.
A. has
B. have
Grammar › View
Where….to spend your holidays next summer?
A. You are going
B. Are you going
C. You will
D. Will you
