1.He was not brave.He ___ jump down from a very tall wall.

1.He was not brave.He ___ jump down from a very tall wall.
A.dare not B.dared not C.dares not D.dare not to
2.I ___ the dinner,because my mother has done it
A don't need to cook B.needn't to cook
C.needn't have cooked D.don't need cook
我觉得是A,B
可是答案是B,A