Liu Xiang is ____ popular ____ many students are talking about him in and out of school.
John had a short walk after lunch, ________?
--Can I help you, boy? —Yes. There is ________ wrong with my bike.
________ food you've cooked!
---Do you like your new T-shirt? —Yes. Not only I but also my mother ________ it.
It took me two weeks ________ reading the novels written by Guo Jingming.