Here's the breakdown of the text in each question along with the correct explanations:

### E-mail
**From:** Peter
**To:** Nick
**Content:** Peter recommends a website for film views and asks Nick to let him know if he wants to see anything.
**Correct Explanation:**
**C. Peter wants Nick to read film reviews from an internet site.**

### Message
**From:** Sam
**Content:** Sam informs David about his father’s mobile phone and that he will call him.
**Correct Explanation:**
**B. The thing David has to do is pick up their mother.**

### Note
**From:** The Boss
**Content:** Reminds about an upcoming meeting and requests that marketing plans be brought.
**Correct Explanation:**
**C. The boss does not like your marketing plan.**

### Exercise 4

1. **Label**
- **Content:** Proper storage instructions for a drink.
- **Correct Explanation:**
**A. Chill the drink in the fridge before you use it.**

2. **Sign**
- **Content:** Indicates no public access on the road for 24 hours.
- **Correct Explanation:**
**B. It is forbidden to use, or stop on, this road.**

3. **Notice**
- **Content:** Information regarding thieves being reported to police.
- **Correct Explanation:**
**A. The police are watching thieves in the area.**

This should help clarify the content of each message and the appropriate explanations.