单项选择题
Be careful,（）you'll fall down.
A.on the contrary B.or rather C.or else D.as for
单项选择题 （）the movie I would have finished my paper last Sunday.
单项选择题 The boy ran out of the classroom without the teacher's（）
单项选择题 I'm sorry I forgot to write; I had so much else（）my mind.
