Answer questions 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, and 5.1.7 related to a short story, including defining 'malicious' in the context of a given line.

To answer these questions accurately, I need the text of the short story you are referring to. Please provide the story or the relevant lines for questions 5.1.2, 5.1.3, 5.1.5, 5.1.6, and 5.1.7.

However, I can answer question 5.1.4 based on the definition of the word "malicious":

5.1.4 Choose the correct answer to complete the following sentence. Refer to line 7 ('Suddenly his own ... through his mind.') 'Malicious' thoughts are ...

• A good thoughts.
• B wicked thoughts.
• C harmless thoughts.
• D amicable thoughts.

The word "malicious" means intending to do harm or evil. Therefore, the correct option is B.

• B) wicked thoughts.