资本主义银行利润的最终来源是( )
Very few people have to finish the work before going home, _________ ?
--- Alice had nothing for breakfast this morning ,____ ? --- No, she got up too late.
You _______ go far if you need help with your homework.
---_______ he _______ from Beijing? --No, he _______.
The students hardly have any spare time for their hobbies, ________?