An action is not possible (because it is against the rules or for another reason).
A. must
B. can’t
C. musn’t
D. don’t have to

Random Topics:
Adjective OrderPresent Perfect - Just, Already, YetPresent Perfect Tense and Simple Past TenseInversion + Passive VoiceAdverbial Concession ClausesGerund - to Infinitive Modals for ObligationAuxiliary ModalPersuasive TextModal Verbs and Gender NounsOther quiz:
Contrastive Conjunctions › ViewWhich of the following sentences uses “although” correctly?
A. Although we saw each other every day, we didn’t really know each other.
B. Although of we saw each other every day, we didn’t really know each other.
C. Although seeing each other every day, we didn’t really know each other.
D. Although we saw each other every day, we didn’t really knew each other.
Grammar › View
Fahry : This picture is good enough, isn’t it?
Aisha : … It’s rather blurred.
A. I think so.
B. I’m afraid not.
C. I agree with you.
D. I don’t have any idea.
E. I don’t care
Analyze the prepositional phrase in this sentence: ‘The cat is under the table.’
A. in the box
B. under the table
C. beside the chair
D. on the table
Grammar › View
Mr. Jack and his son ….. to the beach for a picnic the day after tomorrow.
A. Will go
B. Go
C. Will goes
