改写句子把下列句子改成祈使句：1.You can not smoke here.2.You must not look

1.You can not smoke here.-----------Don't smoke here!
2.You must not look out of the window.----------------Don't look out of the window!
3.You may let the children play the piano.------------Let the children play the piano!
1.It is a tall tree.----------What a tall tree !或 How tall the tree is!
2.They are working very hard.-----------How hard they are working!
3.It is very nice to see you----------How nice to see you !或What a nice to see you !
1.What' s the price of your English book?---------- How much is your English book?
2.My bike is broken.-----------There is something wrong with my bike.
3.Are these your pens?-----------Are these pens yours?