I       the office yesterday afternoon when a stranger came in with a boy．

--- How are our team playing?--- They are playing well. But unluckily one of them hurt.

Please tell Tom not to leave the classroom unless he ______ that all the lights ______.

 Obviously, he _____ a bad cold. He coughs all the time.

--- Oh! You bumped me! --- I am sorry. But I       to catch the coming bus.