1.If you want to change for a double room,you'll have to pay

1.If you want to change for a double room,you'll have to pay____15￥
A.another B.other C.more D.each
2.--May I borrow your dictionary?
--Sorry.I______it myself.
A.am using B.used C.have used D.use
3.--I'm terribly sorry to have stepped on your foot.
--________.
A.You're so polite B.That's OK
C.It didn't hurt me D.No hurry