His father ( )to work by car

His father ( )to work by car
A.goes B.go C.going
( )your aunt work in a supermarket?
A.Does B.Do C.Is
( )Mary's father a salesperson?
A.Does B.Are C.Is
你知道水是怎样循环的吗?给下列句子排序.
（ ）A.The water becomes the vapour.
( ).B.The sun shines
( ）C.The rain falls in the river ,the stream and the lake.
( )D.The cloud in the sky becomes the rain
( )E.vapour goes up to sky and becomes the clound.
( )Mary's father a salesperson?
A.Does B.Are C.Is
这题为什么选C？