1.i can use this ticket on any ,you can 2.the bill won't be a very i don't think so. 3.he wasn't very he wasn't 4.i didn't make a you didn't 5.it won't be a difficult thing to i don't think so.

1.I can use this ticket on any bus,can't I ?-yes,you can2.The bill won't be a very high,will it ?-No I don't think so.
3.He wasn't very polite,was he ?-No he wasn't 
4.I didn't make a mistake,did I?-No you didn't 
5.It won't be a difficult thing to do,will it?-No I don't think so.