[ Modals ]
We’ve got big exams at the end of the year, so we ______ to work hard.
A. don’t have to
B. have to
C. mustn’t
D. should

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So or SuchTenses & AffixesVocabulary, Grammar, SpellingConjunctions and PronounsConditional Sentences Type I, IIAdverb of MannerNouns as AdjectivesPreposition & GerundModal Verbs of ObligationConditional SentenceOther quiz:
Grammar › ViewFeeling the ground suddenly begin to shake, the teacher stayed ____________ and asked all the students to get under their desks.
A. calmness
B. calmly
C. calming
D. calm
Grammar › View
Choose the correct complex sentence:
A. The teacher explained the lesson, and the students listened carefully.
B. When the bell rang, the students left the classroom.
C. The students left the classroom, and they went to lunch.
D. The bell rang, but the students stayed in their seats.