Question

3. Make answers to the questions. Use since or for.
1) How long have you been playing the violin? - almost five years
I've been playing the violin for almost five years.
2) How long has Tom been browsing the Internet?- twenty minutes
3) How long have you been chatting on a computer? -7 p.m.
4) How long has Tom been making videos? - half an hour
5) How long has Tom been downloading music?:- April
6) How long have you been talking now? - ten minutes​

Answer 1

2. For

3. Since

4. For

5. Since

6. For