____ is clear ____ the Diaoyu islands have been China's inherent territory （固有领土）both from historical and legal aspects since ancient times．

 —Have you found your lost mobile phone? —No, I haven’t. But I bought        yesterday. 

 I hate         when people talk with their mouths full.

(2013·高考陕西卷)Although Rosemary had suffered from a serious illness for years，she lost________of her enthusiasm for life.

To save class time, our teacher has ______students do half of the exercises in class and complete the other half for homework.