[ Modal Verbs ]
The instructions say you _____ mix these two chemicals.
A. couldn’t
B. mustn’t
C. wouldn’t
D. might not

Random Topics:
take, make, doParts of Speech and GrammarThe Present Progressive TenseGrammar : Must (Necessity)Grammar and Sentence CorrectionModal SpeculationModals and PrepositionThird Grade ExamPast Continuous vs Past SimpleVerb, Object, PrepositionOther quiz:
Grammar › ViewAre your parents hard-working?
A. Yes, they are
B. No, they can’t
C. Yes, they do
Linking Verb › View
Do you feel uneasy around him?
- linking verb
- action verb