Câu 1: what time is it? 10:15: it’s a quarter past ten 1. 20:15  it’s a quarter past eight p.m 2. 07:40  it’s twenty to eight.   3. 14:50   4. 18:23   5. 06:17   6. 20:45   7. 11:00   8. 14:55   9. 21:46   10. 22:30   11. 12:15   12. 05:42   13. 16:23   14. 10:45    15. 17:08 các bạn ơi giúp mình giải bài này với!!!!!