----Could you please sweep the floor? ---_____________. I have to do my homework first.
----How about having a picnic next weekend?---- It _____great.
Lucy is ill.She has a bad cold for several days.
You go and ask Tom.He know the answer.
— I put the bike here?—No,you can’t.
—Who is knocking at the door?—It be Miss Zhang.Because she has just gone to Japan.