Question

Why ________ wash your face? I can see what you ate this morning.

1. A.
   not you
2. B.
   won't
3. C.
   don't
4. D.
   not

Answer 1

D
考查固定句型“Why not do sth.?”表示“为什么不做某事呢？”可以用“Why don't you do sth.?”替换，表示说话人的建议或劝告。