Dogs have a very good ______ of smell and are often used to search for survivors in an earthquake.
231. The old man is used to sleeping without a ________in order to keep his back from bending.
230. The little boy likes plane models very much. He wants to be a _______and fly a plane into the sky when he grows up.
1. He is such a man of many ______ that all of us respect him.
2. The Xi’an _____ happened on December 12, 1936 in Chinese modern history.
3. To tell you the truth, ______, not words are what we need.