The problem _______ you argued aboutyesterday has been solved.

下列各组词语中加点字的注音正确的一项是（　　）

It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.

Everybody likes to keep_______.

Forty people got injured in a bus accident. Every ________ ambulance was rushed to the scene of the accident.