In most developed countries,it is not necessary for people to boil water before they drink it.
A. In most developed countries,people ought to boil water before they drink it.
B. In most developed countries,people must boil water before they drink it.
C. In most developed countries,people needn’t boil water before they drink it.
D. In most developed countries,people mustn’t boil water before they drink it.
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Simple Present Tense/be/Present ProgessivePresent Simple Affirmative and NegativeGrammar - to be, possessive, have gotPreposition and AdjectiveComparisionAdjectives & AdverbsComparative Adjectives and Adverbs-ing &-ed AdjectivesVerb Tenses and Subject Verb AgreementTime and CalendarOther quiz:
Grammar and Passive Voice › ViewWhich sentence uses the passive voice correctly?
A. The letter was written by Sarah.
B. Sarah was writing the letter.
C. Sarah writes the letter.
D. The letter writes Sarah.
Future Tense › View
I’m afraid you ____ lose your job if you don’t work harder.
A. will
B. are going to
C. will be
D. will have
Grammar › ViewWhat kind of verbal functions solely as a noun?
A. Participle
B. Gerund
C. Infinitive
Question Tag › View
He never goes to to bed before 10 o’clock, _________?
A. isn’t he
B. is he
C. doesn’t he