1) Yesterdai till 6 o'clock they had played twi chess games.
2) Yesterday till the end of the working day she hadn'l looked through all the documents.
3) How many messages had you recieved till the lad monday? I recieved (I had recieved) 7 messages.
4) Before leaving the house, she had written a note for her (the) brother.
5) When we had arrived to the grandmother and grandfather, they were picking apples