Complete these sentences with WHO,WHICH поставьте где нужно в предложениях 1)Where is the letter i gave you to read?
2)here is the book we have spoken about.
3)give me the book ... i gave you yesterday.
4)there is the student ... was at the theatre yesterday.
5) he posted the letter ... he had written.
6)the man ... had called on you left a message.