阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

    Although he is a famous scientist, Yuan Longping ____ himself a farmer. Indeed, his ____face and arms and his slim, strong body are just like those of millions of Chinese farmers. Now Yuan Longping is ____his knowledge in India, Vietnam and many other less developed countries to increase their rice harvests.

    You may find it ____that Charlie was taught to sing as soon as he could speak. Unfortunately his father died,____ the family even worse off. He grew more and more popular as his charming character, the little tramp, became known ____the world. This character was a social ____but was loved for his optimism and determination.

    In the same way that people communicate with spoken language, they also express their feelings using ____“language” through physical distance, actions or posture. However, people from places like Spain, Italy or South American countries ____others closely and are more ____to touch them.