_______ you sit in front of the computer all day while working, you’d better take exercise for at least an hour every day.
When the festival they have been looking forward to _______, people will dress up to celebrate it.
--- Why was Mr. Li so happy this morning? --- Because he was honoured with a(n) _____ for excellence in teaching.
Last week,only two people came to look at the house, _______ wanted to buy it.
Surprisingly, he could draw such a beautiful picture with his eyes _____.
Some steps have been taken to protect the forest _______.