Miss Green was going to give a lecture on Monday afternoon. ___(1)___ on Sunday night, she was told that she had to go to an important meeting the next day at the same time. "No one can be in ___(2)___ at once. What shall I do?" she thought. But soon she had an ___(3)___. At 2:30 on Monday afternoon, Miss Green went along to the lecture room. There were about twenty ___(4)___ waiting there for her. "I'm sorry," she told them. "I ___(5)___ be able to give my lecture today." The students looked ___(6)___. Miss Green said, "Though I can't be with you myself, my ___(7)___ can!" Then she put a small recorder on the desk. "You see. I've recorded my lecture and you can listen to it without me." She thought that everything was all right, then she ___(8)___ the recorder and left. The meeting finished a little earlier, Miss Green ___(9)___ to go back to her students. To her surprise, the room was ___(10)___. As she looked around, she saw a lot of small recorders all "listening" to her lecture!