有2道题目麻烦看看______in the united stated was set up to train men

有2道题目麻烦看看
______in the united stated was set up to train men in theology.
A many school B many schools
C many a school D a many school
为什么选c~
The u.s.secretary of state,together with his assistants,____on route to the Middle East for negotiations on the Middle East queation
A are B were
C has D is
为什么选D呢`~