1) I ... (read) books a bout adventures since.I was a child. что тут вставить ? 2) We ... (know each other for a long

1) I have been reading books about adventures since I was a child. (Present Perfect Continuous)

2) We have known each other for a long time. (Present Perfect)

3) I have already listened to this disk. (Present Perfect)

4) The child has been crying since 12 o\'clock. (Present Perfect Continuous)

5) They have been playing chess for 3 hours. (Present Perfect Continuous)