今晚就要!(初一英语,要说明O)why does her mother buy the book?(改为同意句)____

今晚就要!
(初一英语,要说明O)
why does her mother buy the book?(改为同意句)_________________________________;
单项选择:One of the pandas _____ a baby.
A.has B.have C.there is D.there are；
why的同义词______ for.
第一题改为：why does her mother buy the book?(改为同意句） _____does her mother buy the book____?