He put ________ cardboard on the top of the jar.

She has to ________ the animals every day.

The Internet ________ it easy to get much information in a short time.

We can't ________ ducks in the classroom.

In Canada, people ________ cover plants in spring because it's too cold at night.

--Would you like ________ milk?

--No, thanks. 1'd like some coffee.

You are ________ a child. You should learn to look after yourself.

In a ________ game each team has eleven players.

Go and ________ out of those wet clothes into something dry.