下列各句中加点成语的使用，正确的一项是( )

Hello, Sandy. This is Jack. What are you doing— I’m watching a match. It started at 7 p.m. and _____on for another half an hour.

Is that a book on farming?_______,I want to borrow it.

Little joy can equal ________ of asurprising ending when you read stories

European tour with a speech in Bruges, Belgium, President Xi says China and the EU can become twin engines of growth.