几道初三英语选择
①I am （）sorry for what I have done.
A.probably B.hardly C.nearly D.extremely
②I am sure it（）be a bird in the sky.
A.mustn't B.needn't C.can‘t D.shouldn’t
③What is behind that tree?
There must be a dog （）beside it.
A.sit B.sat C.to sit D.sitting