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must is often used in...
written rules
must is often used by...
people in authority
we use have to when we say that something is unnecessary. True or False.
False.
must not means something is not...
permitted or allowed
don't have to means something is ...
unnecessary/not necessary
can means something is ...
allowed
can't means that something is not allowerd or...
not possible
can and must are ___ ___ verbs.
modal auxiliary
Must is frequently used in questions. True or False.
False. It's rarely used.
We use "have to" + ...
infinitive
We use must/can + ...
infinitive
