---"Can you find me a good physics teacher?" ---"Yes, I know one with ______."

—What’s your last name?—Green. 

—Will you fix up the machine according to the ______, David ? –No problem.

There are _____ in the room.

---I’m sorry to hear that the swimmer drove again after drinking and hurt seriously. --- It’s too dangerous. The traffic accident was a really _______to him.