Mia’s father was a scientist and had a laboratory(实验室) , but she had no idea what was in it. Her dad always _________ the door after he went in. She knew that he used it to do projects for _________ every day. He never told Mia what these projects were.

One night Mia walked close to the door of the laboratory. She stopped and thought, “I _________ what crazy experiment he is doing now.” Suddenly she heard a loud _________. It sounded like an evil(邪恶的) laugh. The noise scared her. So she walked _________ back to her room.

The next night, her friend Liz came to her house. When Liz arrived, Mia told her about the night before. Oh, it was _________, you must be frightened.” she said.

“Why don’t we see what is in there?” Lisa asked. “It will be a fun adventure!”

Mia felt nervous about going into her father’s laboratory, but she _________. As always, the door was locked. They waited until Mia’s father left the laboratory to eat inner. “He didn’t 1ock the door!” Liz said. “Let’s go.”

The laboratory was _________. The girls walked down the stairs carefully, Mia smelled strange chemicals. What terrible thing was her father creating?

Suddenly, they heard an evil laugh. It was _________ than the one Mia heard the night before. What if a monster was going to kill them? Mia had to do something. She shouted for help.

Mia’s father ran into the room and turned on the lights. “Oh, no,” he said. “You must have learned my __________.”

“Your monster tried to kill us,” Mia said.

“Monster?” he asked. “You mean this?” He had a pretty doll in his hands. The doll laughed. The doll didn’t sound so evil anymore. “I made this for your birthday. I wanted to give a big surprise to you then, but you can have it now. I hope you like it!”