1)her eyes were red because she had been crying2)has finished3)comes, mother will still be cooking4)helps/has been helping/has washed/are cooking5)What were you doing at 5 o'clock yesterday?6)What does Nick usually do in the evening? reads, watches, plays7)had already been studying8)had been reading, would return9)Have you done your homework? No! I'm still doing it.I have already been doing it for 2 hours but i haven't done it yet10)What will you do tomorrow? We will go to the theatre if she brings tickets11)have been playing12)rang up/was still learning/had begun13)would spend14)Have you seen Mary today? Yes, I have. I saw her...15)will be watching, will have already done, come16)where did you spend/ spent17)what are you reading? I am reading a magazine/ How long have you been reading it?18)had done, was playing19)came/told/had been waiting for