People had to use bicycles to go to the city center.(改为同义句） People__ __to use bicycles to
问题描述：
People had to use bicycles to go to the city center.(改为同义句） People__ __to use bicycles to
People had to use bicycles to go to the city center.(改为同义句）
People__ __to use bicycles to go to the city center.
People__ __to use bicycles to go to the city center.填must be可以吗
答
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People had to use bicycles to go to the city center.(改为同义句）
= People (had got) to use bicycles to go to the city center.
注：have/has/had got to do sth = have/has/had to do sth 不得不做某事
must be不可.