Choose the appropriate words to complete the sentences1. He talked (about/from)leaving London.2.I thanked you (of/for) helpingme.3.Don't prevent me (of/from)writing a letter.4.He blames her (of/for)breaking the window​

1. He talked about leaving London.
To choose the appropriate word, we need to understand the meaning of the sentence. The verb "talked" is followed by the preposition "about" when discussing a specific topic or subject. In this case, the topic is leaving London. Therefore, the correct word to complete the sentence is "about."

2. I thanked you for helping me.
To choose the appropriate word, we need to understand the meaning of the sentence. The verb "thanked" is followed by the preposition "for" when expressing gratitude or appreciation towards someone for a specific action. In this case, the action is helping. Therefore, the correct word to complete the sentence is "for."

3. Don't prevent me from writing a letter.
To choose the appropriate word, we need to understand the meaning of the sentence. The verb "prevent" is followed by the preposition "from" when indicating that an action is being stopped or hindered. In this case, the action is writing a letter. Therefore, the correct word to complete the sentence is "from."

4. He blames her for breaking the window.
To choose the appropriate word, we need to understand the meaning of the sentence. The verb "blames" is followed by the preposition "for" when assigning responsibility or fault for a specific action. In this case, the action is breaking the window. Therefore, the correct word to complete the sentence is "for."