自从孩子们搬走后，她常常感到孤独。

She often feels ___lonely since her children moved away.

长途卡车司机孤独的生活可能很艰难。

The ___lonely life of a long-distance truck driver can be tough.

没有朋友，我会感到非常孤独。

Without my friends, I would feel incredibly ___lonely.