Употребить в правильной форме present perfect: 1. i (write) a letter to my friend (just) 2. the children (learn) the song (yet) 3. she (call) her friend (already) 4. they (buy) a new computer (already) 5. we (read) this story (just) 6. she (call) me (just)

1. I have just written a letter to my friend 2. The children have not learnt the song yet 3. She has already called her friend 4. They have already bought  a new computer 5. We have just read this story 6. She has just called me