Read the following text to answer questions 21 to 25.

    It was about 3.30 in the afternoon. Mr Tugiyo had just come back from the forest after collecting some firewood. Before it got dark, he went back home to take a bath and get some rest.

    Nothing was suspicious when he entered his house yard. However, just as he went into his house, there was a tiger, standing still in his living room. It was glaring at him. He stunned by the horror he found. He saw his wife, shocked, in front of the bedroom door. Her face as white as paper. He knew his family was also in danger.

    Mr Tugiyo took several steps back. He gave a sign to his wife to enter and lock the bedroom. After he was sure that his wife was safe, he went out of his house and locked the front door. Then, he screamed for help from the neighbours. One of his neighbours called the police. Later some policemen and officers from the zoo arrived and caught the tiger.

    Finally, the tiger was brought to the nearest zoo safely. The officers said that the tiger was searching for food and it came from the nearby forest.

22. "Her face was as white as paper." (paragraph 2)

The underlined phrase has a similar meaning to ____