[ Expressing Obligation and Modals ]
A good sense of humour is important, even in business. You ____________ serious all the time.
A. don’t got to be
B. don’t have to be
C. mustn’t be
D. don’t not have to be

Random Topics:
PersonificationBare Infinitive and To InfinitivePast and Present TensesPresent Perfect and Simple Past TenseAdverbs of DegreeNouns FormationGrammar: MorphologyIdiomsVerbals and GerundsLinkers and ConjunctionsOther quiz:
Modals › ViewTuesday is my sister’s day off, so she______ go to work.
A. mustn’t
B. doesn’t have to
C. can’t
D. should
Present Tenses › View
Question: ………………………………
Answer: “It’s sleeping.”
A. What’s the dog doing?
B. What’s your mum doing?
C. What’s he doing?
D. What are you doing?