1.
1)It's half past ten.
2)It's eight o'clock.
3)It's quarter to two.
4)It's quarter past two.
2.
1)It's twenty past two.
2)It's ten to three.
3)It's twenty-five to four.
4)It's ten past four.
5)It's five past five.
6)It's twenty to six.
7)It's quarter to two.
8)It's twenty-five past six.
9)It's five to seven.
10)It's quarter past seven.
11)It's half past nine.
12)It's ten to eleven.