If you had lived in the Middle Ages，you ________the chance to appreciate the art works of Leonardo da Vinci.

Mum ________ to us, “Be quiet! Your little sister’s sleeping.”

There are eight tips in Dr.Roger’s lecture on sleep，and one of them is：________ to bed early unless you think it is necessary.

He likes playing ____violin but dislikes playing _____ football.

The old man made ______ clear that he would retire soon.[ ]