He seems too tired today, and I wonder he got a good sleep last night.
Leonardo da Vinci (1452-1519) ____ birds kept in cages in order to have the pleasure of setting them free.
They paid fifty percent of _____ they were able to earn to the state.
My sister is _______ about what she eats, otherwise she would not be so thin.
I know a little bit about the city as I __________ there for one year in my youth.
While working in the countryside, the students a great deal of knowledge on plant life.