1.Have to write.
2.had to write.
3.have to sleep.
4.had to sleep.
5.haven`t to do.
6.hadn`t to do
7.had to write.
8.has to write.
9.has to go
10.have to do,have to drink
11.have to drink,have to eat
12.had to read,has to read
13.has to play
14.had to shine,had to sing
15.to eat
16.have to eat.