It’s 10 past 9 (Alternative clock system).

21:10

It’s 10 past 9.

Correct answer

20:50

It’s 10 to 9.

Error: mirror minute hand about the vertical axis

21:14

It’s 14 past 9.

Error: read minutes as hours with ‘past’ or ‘to’

14:45

It’s a quarter to 3.

Error: confuse hour and minute hands