--- I started off to walk, but Peter gave me a lift.
--- Therefore, you after all.
A. didn’t need walk
B. needed not walk
C. didn’t need to walk
D. need not to walk
网友回答
A. didn’t need walk
B. needed not walk
(答案→)C. didn’t need to walk
D. need not to walk
解析：考查need用法。在本句中need是实意动词需要的意思。其否定形式要借助于助动词，后面接带to的不定式。结合语境可知下文是描述的过去的动作，故助动词用过去时态。选C。