1 (1:00) it is one o'clock.
2 (9:00) it is nine o'clock
3 (9:38) it is thirty-eight minutes past nine
4 (6:50) it is ten minutes to seven
5 (1:34) it is thirty four minutes past one
6 (10:26) it is twenty -six minutes past ten
Не знаю какой у Вас учебник,но 3 и 5 Часы написаны неверно-должно быть так:
3 (9:38) it is twenty-two minutes to ten.
5 (1:34) it is twenty-four minutes to two.