[ Modals ]
_______be sitting down at your desk when the bell rings.
A. You can
B. You must not
C. You have to
D. You do not have

Random Topics:
Regular Plural NounsGrammar and Verb TensesTOEIC Grammar and Vocabulary ReviewConjunctions and PrepositionsComparative and Superlative AdjectiveAdverb PhrasesRegular and Irregular VerbsPast Simple (to be)Conditional ClauseTenseOther quiz:
Grammar › ViewWhat is the opposite of hot?
A. cold
B. glue
C. hotter
D. warm
Grammar › View
Kate is busy. She __________________ for a test.
A. is study
B. is studying
C. is studies
Linking Verb › ViewJohn _______ impolite today. He is always polite and helpful to others.
A. is
B. was
C. is being
D. was being
Simple vs Present Continuous Tenses › View
Ronald and I … football in the school yard now.
A. am playing
B. are playing
C. is playing