选C.There were no buses A.There was no bus bus可数，要变复数且was改为wereB.There being no bus being错，bus同上D.There was not a bus a改为any
一楼的明显错误，不要误倒啊。这没有从属之分。这是两个并列短句，构成因果关系！选C
B逗号后面是一句完整的句子，所以前面不能是一句句子，只能是状语。
