11 class Science

Do you know who .... America?

We have done a lot of ..... why people are afraid of ghosts.

What's the difference ..... oxygen and this substaince?

It is not a ..... task, it's really simple.

There's a ...of printers in the office. We need some more.

file sent together with an e-mail message

online conversation between a group of people

Empty the washing …

Professor Wring ..... the computer laboratory.

The experiment just ... answering some questions.

I would like to find .... more how to become a designer.

Our car has broken... again.