You have to leave now _________ you can catch the early bus.
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.