[ Grammar ]
You look terrible! You ________ be really sick.
A. must to
B. must
C. will
D. must not

Random Topics:
Auxiliary Verbs, if, unless and ModalArticles with SubstancesAdjectives and AdverbsObject PronounsWho or WhomGrammar and StructureCan/CouldPresent Perfect and Present Perfect ContinuousPast Tense (Regular and Irregular)Present Simple & ContinuesOther quiz:
Present Perfect Simple and Continuous › ViewI ___ (call) you for half an hour. Where __ (you/be)?
A. have been calling; have you been
B. have called, have you been
C. have called, have you been being
D. have been calling, have you been beeing
Homophones › View
When I wore my favorite shirt, I received a _____________ from my sister.
A. Compliment
B. Complement
The manager’s __________ on the new policy was clear and direct.
A. opinion
B. view
C. assertion
D. belief
Phrasal Verb › View
He often ______ his brother when his parents aren’t home.
A. looks down
B. looks up
C. looks for
D. looks after