They _____ be French. They’re speaking German.
A. can’t
B. mustn’t
C. don’t have to
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Articles › ViewWhere did you put __________ shampoo?
A. a
B. an
C. the
D. –
Modal Verbs › View
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.
Grammar: Syntax › ViewRefers to the noun phrase or pronoun which is governed or affected by the verb within a clause. There are three types of ______ in English.
A. declarative
B. predicate
C. subject
D. object
Modal Verb › View
All people _____ obey the traffic rules.
A. mustn’t
B. have to
C. must
D. don’t have to