Certainly, let's identify and correct the errors in the underlined parts of the sentences:

1. Tom wishes he has enough money to travel around the world.

• Error: "has"
• Correction: "had"
• Explanation: The sentence is in the subjunctive mood, which uses "had" to express a wish that is unlikely or impossible to fulfill.

2. Thanh loves play pickball, but his brother hates it

• Error: "play"
• Correction: "playing"
• Explanation: "Love" is followed by a gerund (verb + -ing) when expressing general enjoyment of an activity.

3. If you do your homework more careless, you don't get good marks.

• Error: "careless"
• Correction: "carelessly"
• Explanation: "Careless" is an adjective, while "carelessly" is the adverb form needed to modify the verb "do."

4. Do you mind not to talk about the past in such a negative way?

• Error: "not to talk"
• Correction: "not talking"
• Explanation: The correct structure for "mind" followed by a verb is "mind + gerund."

5. My friends are fond in building websites.

• Error: "in"
• Correction: "of"
• Explanation: The correct preposition to use with "fond" is "of."

6. Alice promised adding some information about the past to his presentation.

• Error: "adding"
• Correction: "to add"
• Explanation: "Promised" is followed by the infinitive form of the verb (to + verb).

7. My father drives more careful than my brother.

• Error: "careful"
• Correction: "carefully"
• Explanation: "More" is used to compare adverbs, so "carefully" is the correct form.

I hope this helps! Let me know if you have any other questions.