问题
Work means much to me. It is ______ of my life ______ air, water and sunlight.
A:as much a part; as
B:as a part as much; as
C:as a part much; as
D:so much a part; as
B:as a part as much; as
C:as a part much; as
D:so much a part; as
正确答案是：
