1. A: When did you see John? B: Five years .
2. I haven't eaten anything two days.
3. He left school month.
4. I've had the same ringtone on my mobile July.
5. Have you used this website to download music? It's very good.

1. A: When did you see John? B: Five years ago.

In this sentence, the person is being asked about when they saw John. The response "Five years ago" is indicating that the last time the person saw John was five years in the past.

2. I haven't eaten anything for two days.

In this sentence, the person is stating that they haven't eaten anything for the past two days. The word "for" is used to indicate the duration of time.

3. He left school a month ago.

In this sentence, it is being stated that he left school one month in the past. The phrase "a month ago" is used to indicate the specific time when he left.

4. I've had the same ringtone on my mobile since July.

In this sentence, the person is stating that they have had the same ringtone on their mobile phone since the month of July. The word "since" is used to indicate the starting point of an action or situation.

5. Have you used this website to download music? It's very good.

In this question, the person is asking if the other person has used a specific website to download music. They also mention that the website is good. The word "have" is used in the question because it is asking about a past experience or action.