11.
Having finished the book, it was put away by him.

12.
When it was feared that the serfs might go too far and gain their freedom from serfdom, the Protestant leaders joined the princes at crushing them.

13.
I told him clearly that he hadn't ought to do that to me.

14.
It is easy for children than for adults to learn a new language.

15.
The company goes to great length to ensure that employees can be comfortable in their work environment.