1. How long have you been here?

I've been here for 10 minutes.

2. How long has he had his computer?

He's had it since January.

3. How long have you been at this school?

I've been there since I was 6.

4. How long have they lived in this town?

They've lived there for 3 months.

5. How long have you wanted a pet?

I've wanted it since 8 years.

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