As we know, adults are not ______ ; they do not move comfortably to another place.

After days of fantastic space trip, the three astronauts walked out of the spaceship, _______.

The audience were so ______ by his humorous performance that they kept laughing all the time. 

The old .engineer’s eyes still shone bright in the wrinkled brown face and his step as he came across the room was________，though slow.

 “I don’t understand what you are saying,” she said, with a _____ expression on her face.