问题补充：
There is milk left now. I have to go and buy some.
A. not a little
B. not a bit
C. a little of
D. not a bit of
答案：
A. not a little
B. not a bit
C. a little of
(答案→)D. not a bit of
解析：考查固定搭配。Not a little非常，十分；not a bit一点也不；a little要单独使用；a bit一点点；句意：现在一点牛奶也不剩下了，我不得不去买一点回来。故D正确。
