Don't handle the vase as if it ______ made of steel.
Visitors ________not to touch the exhibits.
— What’s the matter? — The shoes don’t fit properly. They____my feet.
In this experiment, they are woken up several times during the night, and asked to report what they__.
When he was alive, the old scientist used to say that knowledge __from practice and he gained his experience by doing a lot of practical work.
He __articles for our wall-newspaper these three years, and he __about forty articles.