1. I feel so bad. Maybe I should take a rest for a few minutes.

   • "some minutes" should be changed to "a few minutes" for clarity and correctness.

2. His wife is laughing at the picture of the knight on the horse.

   • The phrase "on the floor" should be "on the horse" to make sense in the context of a knight.

3. Living our lives and holding our fate.

   • "Living our life" should be "Living our lives" to match "holding our fate" in plural form.

4. Which is the best movie in the Fast and Furious series?

   • Add "the" before "Fast and Furious series" and "series" should be singular.

5. The invitation cards are beautiful and creative.

   • This sentence is correct as it stands.

6. What animals have rough skin? - Elephants, frogs, etc.

   • "the" before "rough skin" is not necessary, and this sentence is correct as it is.

For the phonetic sounds:

• /f/: as in "fish," "fun," "leaf."
• /v/: as in "vine," "voice," "love."