There were much pollution求英语高手

这里必须要用was , 因为pollution （污染）是不可数名词, 所以谓语要用单数,同时there be 句型还有就近原则,be 动词与其临近的名词保持一致.例如：There is a book and two pens on the desk./ There are two pens and a book on the desk.