John has been sick for a long time,so he __pain.A.used to B.is used to

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John has been sick for a long time,so he __pain.A.used to B.is used to
John has been sick for a long time,so he __pain.
A.used to B.is used to

John has been sick for a long time,so he __pain.A.used to B.is used to
used to do sth 过去干什么
be used to sth 习惯于..
选B