[ Grammar ]
Those audiences ____ show their tickets before entering the concert hall.
A. have to
B. must
C. ought to
D. don’t have to

Random Topics:
Grammar - FragmentsRelative Clauses and Past PerfectSentence LabelingRun-On SentencesNouns, Articles, DeterminersPresent Simple and Present Continuous TensesGrammar / PronounsInfinitives or GerundsVerb BETenses and Word FormationOther quiz:
Simple Present - Negative & Interrogative › ViewI _ _ _ like reading comics.
A. do not
B. is not
C. does not
D. not
Vocabulary & Grammar › View
I am hot and dirty from working in the garden. I need to ________; a hot one.
A. take a break
B. take a rest
C. take a bath
Modal Verbs › ViewJohn ________ your car keys. He hasn’t even left the house.
A. can’t take
B. mustn’t take
C. can’t have taken
Tenses › View
When talking about a completed event where an exact time is given or is obvious, we use:
A. Present continuous
B. Past continuous
C. Present simple
D. Past simple