1.It was ( )project that I couldn't finish it on time.

1.It was ( )project that I couldn't finish it on time.
A.so difficult B.such a difficult C.so difficult a D.such difficult
2.Have you ( ) Mozart?
---Yes.He was a great composer from Austria.
A.listend B.heard of C.told about D.thought
3.My mother buys vegetables ( ) every day.
A.on her way home B.on her way to home C.in her way home D.in her way to home
(请问一下第一题为什么不能选C,第三题为什么不选C）