[ Conditional Sentences with Modal Verbs ]
If they want to participate in the competition, they ______ violate any of these regulations.
A. shouldn’t
B. mustn’t
C. can’t
D. might not

Random Topics:
Transitive and Intransitive VerbModals, Infinitives and GerundsPunctuationsVerb FormModals of AdviceGrammar - Place and MovementObject PronounsGrammar (Possessive Pronouns)Verb + InfinitiveModal Verbs of ObligationOther quiz:
Grammar › ViewTom and I ___ basketball after school.
A. play
B. plays
C. playing
D. played
Grammar › View
Which tense does the sentence use?
Reagan drew the picture with a charcoal pencil.
A. past
B. present
C. future
Tenses › ViewChoose the most suitable form of verb for the sentence below.
They ________ each other for a long time.
A. are knowing
B. have knowing
C. know
D. have known
Vocabulary › View
Liveliness; energy
A. Bantering
B. Cynical
C. Vitality
D. Solemn
