The government pays ----- attention to the project and large

The government pays _____ attention to the project and large amounts of money ____ on it.
A.many...have been spent B.much...have been spent
C.a lot of...is spent D.a great deal of...has been spent
答案是选B,为什么?不应该是has been spent吗
如果把large amounts of 改成lots of 呢？还是用have been spent吗？