Tyron was very angry, but cool-headedenough to _________ rushing into the boss’s office.

The police still haven’t found the lost child, but they’re doing all they ________.[ ]

I’m calling about the apartment you the other day. Could you tell me more about it

Jumping out of ______ airplane at ten thousand feet is quite ______ exciting experience.

The article gives several ______ about why we shouldbuild up the harmonious society.