Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
Some pre-school children go to a day care center, they learn simple English games and songs.
How can shefrom her illness in this room which is so dirty and dusty?
—Do you mean that we have lost our way? —_____, my dear. We’d better ask someone for help.
The old man bent with a heavy _______ on his back.
Tom was in low spirits because he _______ by the boss for his fault.