He is the only survivor of his family from the big earthquake.
He is the only one who ____ the big earthquake in his family.
Scientists are searching for a cure for the disease.
Scientists are ____ ____   a cure for the disease.
Your question is not the part of our discussion.
Your question does not ____  ____ our discussion.
The two countries are warring with each other.
The two countries are ____ ____ with each other.
She got nothing in reward for her kindness.
She got nothing ____  ____  ____ her kindness.