Complete the sentences with the verbs in
the box. Use will, the present simple or past
simple passive.

discover, visit, not tell, live

1 Do you think people ____
on Mars in the future?

2 The Wieliczka Salt Mine ___
by more than one million tourists each year.

3 Don't worry. I ____
anyone what you told me!

4 Radioactivity____
the Polish scientist Marie Curie and her
husband, Pierre.
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