请写出详细原因,

请写出详细原因,
61.The use of radar as well as the two-way radio ______ for the police to intercept most speeders.
a.make it possible b.makes it possible c.makes possible d.make it a possibility
62.The family never agree about ______ shares of the property.
a.her b.its c.their d.his
63.The flock of geese was flying through the sky in perfect formation following ______ leader.
a.its b.their c.his d.her
64.When Jonathan went to Spain with his sister,he bought a leather coat for her and another for ______.
a.him b.himself c.he d.his
65.Those of us who wear glasses should have ______ eyes examined at regular intervals.
a.their b.our c.his d.her