You can take anything from the shelf and read, but please________the books when you've finished with them.
All his friends admire his creativity, for he always comes up with many _______ ideas in the discussions.
In times of trouble, _______ our spirits are low, telling our worries and fears to friends eases the stress.
We need not feel ashamed of our failure. We may, _______, face it realistically and accept it optimistically.
The smelly water has been found_______ and no longer usable until the chemicals and wastes are removed from it.
---Oh, Tom, what did you do this summer vacation?---Guess what? I had ______great fun in _______show performance “ Voice of China” .