1. Correct the mistakes in the sentences. There are two mistakes in each sentence. 1 First time I met Sam he was reading the book about multiple intelligences.

2 I enjoy documentaries about famous people more that

documentaries about environment.

3 The exam was such difficult that I will probably get the bad results.

4 In general, training as the nurse is not more difficult as studying medicine.

5. His performance wasn't enough good that day to win a final of the tennis tournament.

1. First time I met Sam, he was reading the book about multiple intelligences.
- Correction: The word "First" should be changed to "The first" to indicate the specific time.

2. I enjoy documentaries about famous people more than documentaries about the environment.
- Correction: The word "that" should be changed to "than" to compare the two types of documentaries.

3. The exam was so difficult that I will probably get bad results.
- Correction: The word "such" should be changed to "so" to express the degree of difficulty. The word "the" before "bad results" should be removed.

4. In general, training as a nurse is not more difficult than studying medicine.
- Correction: The word "as" should be added after "difficult" to compare the two activities. The word "the" before "nurse" should be added to indicate a specific profession.

5. His performance wasn't good enough that day to win the final of the tennis tournament.
- Correction: The word "enough" should be placed before "good" to indicate sufficiency. The word "a" before "final" should be removed.

Explanation:
1. The word "First" should be changed to "The first" to indicate a specific time when the speaker met Sam for the first time.
2. The word "that" should be changed to "than" to express the preference of enjoying documentaries about famous people over documentaries about the environment.
3. The word "such" should be changed to "so" to indicate the degree of difficulty. Additionally, the word "the" before "bad results" is unnecessary.
4. The word "as" should be added after "difficult" to compare the difficulty of training as a nurse and studying medicine. The word "the" should be added before "nurse" to specify the profession.
5. The word "enough" should be placed before "good" to indicate that his performance was not sufficiently good. The word "a" before "final" is not necessary.