a) 4:45 - It's a quarter to five.
b) 12:40 - It's twenty to one.
c) 6:30 - It's half past six.
d) 3:00 - It's three o'clock.
e) 9:35 - It's twenty-five to ten.
f) 12:05 - It's five past twelve.
g) 8:25 - It's twenty-five past eight.
h) 7:15 - It's a quarter past seven.