A True: 1, 2, 5, 6.
False: 3, 4.
B 1. He couldn't speak a word of English.
2. He wanted to talk about the Queen with the author of the story.
3. Due to his bad English, he insulted the Queen without going to and meaning the other thing.
4. Yes, he did.
5. It means that if you pronounce some word in English worng a little bit, the word and the meaning of it will change.