I want to buy _________ piano for my daughter as the birthday gift. She’s good at playing ________ piano. What do you think of _________black one

People read newspapers and magazines in order to keep themselves _________ of what is going on in the world outside.

Can we finish our task by the weekend?— It all depends ______ we can get MrSmith’s cooperation.[ ]

His mother was born (出生) ________ .

eb Daimler, ______ German engineer, is normally believed to have invented ______ car.