一道关于情态动词的英语习题
The had plenty of bread,so she__a loaf.
A.needed not to buy B,need not to have bought C,needn't have bought D.didn't need to buy 这道题应该怎么判断选哪个?如何判断need是做情态动词还是实义动词呢?如果做实义动词那么D的用法对吗?可以说是didn't need吗