1) they are to load

2) they have to light

3) he has to write

4) I am to return

5) which is to take

6) who is to work

7) but she didn't have to say it

8) he was to meet

9) has to be moved

10) had to stay in bed, I didn't have to do the cooking

11) he is to remain, he then has to go

12) last touches has to be added, he is to move

13) I had to cut my visit short