美味牛肝菌大小:帮帮忙中译英（请不要用软件翻译，谢谢）。就4句，谢谢

1.有个警察在和你招手是吗？你刚才肯定超车了。 If you see a police wave to you that means you must have overspeed just now.
2.他们不可能是我们学校的学生，我没健过他们。 They can't be the students in our school, since i never seen them before.
3.昨天下午他肯定没打扫教室. He definitely must not clean the classromm yesterday afternoon.
4.你爸妈肯定退休了，是吗？Are you parents got retired now, aren't they?

1.Is there a policeman shaved with you? You must overtake just now.
2.They can not be our school\'s students, I haven\'t see them before .
3.He unlikely swept the classroom yesterday afternoon.
4.You parents must retire, is that right?

正确答案：

1 Was a police officer signing to you?then you must be speeding.
2 They can't be going our school,cos i've never seen them before.
3 He sure didn't clean the classroom.
4 Your parents must have retired, have they?

Is there a policeman waving at you?You must have been overspeed.
They can't be students of our school,for I've never met them before.
He couldn't have cleaned the classroom yesturday afternooon.
Your parent must be retired,aren't they?

1.Is there a policeman who waved to you? You must have overtaken just now.
2.They can't be our schoolmates, for I haven't seen them before .
3.It is unlikely that he cleaned the classroom yesterday afternoon.
4.You parents must retire from the business, is that right?

地道点：

1,is that policeman waving to you? you must be speeding just now.
2,they couldn't school here,'couse i haven't seen them at all.
3,he was sure to not clean the classroom yesterday pm.
4, your parents've retired,right?