Голицынский, 7-е издание – Модальные глаголы – Упражнение 564

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need.
need, must.
can, shall be able to.
need.
may, can, must.
must.
can, can.
had to, could.
have to.
can.
can.
has to.
could, had to.
must, must, must, can, can, need, must, must.
need.
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