单项选择题
What a fool I have been! Why（）I think of that before?
A.don’t B.didn’t C.not D.do
单项选择题 ---Which do you like better, real movies（）cartoons? -- I prefer cartoons （）real movies.
单项选择题 --- What's happened to Tom? ---（）to hospital.
单项选择题 The bedroom needs（）
