--- This must be a footprint of a tiger. --- It ____ be. A tiger’s should be much larger and deeper than this.
You know that widely reading helps ______ your knowledge so I can’t help _____ the housework every day.
The factory is five kilometers ______ from his house.
The little boy found his toy you _____ under the bed.
The meeting ______ tomorrow afternoon is about _______ rid of pollution.
Children in China today have nothing ______.