Как пишется время по ( буквами, словами). )) 7: 00, 7: 10, 7: 30, 10: 40, 13: 40, 13: 50, 14: 00, 14: 10, 18: 00, 18: 10, 21: 00

Seven o'clock 
Ten minutes past seven
Half an hour of the eighth
Twenty minutes to eleven
Twenty minutes to two
At ten minutes to two
Two hours of the day
Ten minutes of the third
Six o'clock in the evening
Ten minutes past six
Nine o'clock