Mr Smith's watch doesn't work, so he's going to ask someone _______it.
A:fix
B:to fix
C:fixing
D:to fixing
北魏孝文帝迁都洛阳后移风易俗的主要措施有( )
①易服装②讲汉话③改汉姓④通婚姻⑤改籍贯
下列各式由左边到右边的变形中,是分解因式的为( )