Shlander is a man from space. He thinks the people and things on the earth are very strange. He is now writing a letter to his friend at home. Here is part of his letter. Read it and answer the questions.

    Now I am in a strange world. It is very nice. There are many new things here. There are many earth monsters here£¬ too. The earth monsters look very funny. They have just one head£¬ two arms and two legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The earth monsters have a hole in their face. Every day£¬ they put nice things and balls from the trees into the hole. They put water into the hole£¬ too. The earth monsters do not walk very fast. They move from place to pace in tin boxes.

    At night£¬ the earth monsters like to look at a square window box. This box has very small earth monsters in it.