you'll have to pay( )$15.
问题描述：
you'll have to pay( )$15.
答
If you want to change for a double room you''ll have to pay _______ $ 15.
A.another B.other C.more D.each
答案A,如用B,应说five more dollars.
选each不行,因为a double room 不是两间房的意思,而是一间双人房间.