25. Welcome to the Historical Museum, everyone! This stone knife _______ in South Africa and experts can’t be exactly sure about its use.
--- It is four years since I lived in shanghai. ---________?
I don’t know ____________.
I ______ this book for two weeks. I have to return it now.
Japan lies_____ the east of China ______the east of Asia.
_____ so delicious, the food in this market was sold out soon.