Lily：Hi,Jane.（what are you doing?）
Jane：I’m doing my homework.What's up,Lily?
Lily：(I am going to the library ).Would you like to go with me?
Jane：Yes,I'd love to.I also want to borrow a book about the computer.
Lily：（ Now）?
Jane：Yes,Let’s go.
（In the library）
Lily：（how long can i keep the book
Assistant：You can keep the book for two weeks.（will you return it one time?）.
Lily：Sure,I’ll return it on time.Thanks a lot.
Assistant：It’s a pleasure.
按要求完成下面的句子.
Yu Lan is singing [between Zhang Ying and Liu Ling].（请对[**]部分提问）
（ what song ） （is ）Yu Lan singing?