英语:-Where is Lily?-She said she wanted to borrowsome books ,so she ( )in the library.

问题描述:

英语:-Where is Lily?-She said she wanted to borrowsome books ,so she ( )in the library.
A:maybe B:must be C:can be D:will be

B:must be
全文翻译:丽丽在哪里?
她说她想去借几本书,所以一定在图书馆.
祝好.