It’s a quarter to 8 (Official clock system).

07:45

It’s a quarter to 8.

Correct answer

08:15

It’s a quarter past 8.

Error: mirror minute hand about the vertical axis

07:51

It’s 9 to 8.

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

09:45

It’s a quarter to 10.

Error: quarter to 10