Погмогите пж срочно задание на фото, очень надо, там из 1-го надо сделать 2 предложентя

1) Kate has been watering the flowers for forty minutes.    Kate has watered half of them.2) Jack has been reading humorous stories since 2 o'clock.    Jack has read three stories.3) Helen has been doing the shopping for an hour.    Helen has bought ten books.4) Bill has been writing the letters since 5 o'clock.    Bill has written two letters.5) They have been building the houses since 2006.    They have built five houses.6) Susan has been translating the texts for 3 hours.    Susan has translated four texts.7) Nick is tired - he has been watching videos since 2 o'clock.    Nick is tired - he has seen two films.8) I have been learning English idioms for 20 minutes.    I have learnt seven idioms.9) R-B has been eating sweets since morning.    R-B has eaten 100 sweets.:)