It's quarter past fourteen
It's twenty minutes past nineteen
It's quarter to nineteen
It's eleven o'clock
It's fifty minutes to nineteen
It's fifty-five minutes to eighteen
It's fifty minutes to seventeen
It's fourty minutes to twenty
1)is/is
2)is
3)is
4)is/is
5)are
6)is
7)are/are
8)is/is
9)is/is/is
10)a
11)are
12)are
13)are
14)*/is/was
15)were