Phrasal Verbs

In 2010, the President of the United States, Barak Obama, __________his country's plans for space exploration.

• set out

• set up

• sum up

• wipe out

Why _________ on humans to risk their lives?

• call out

• call on

• die out

• cut out

You can ________ the answer in one word: survival.

• end up

• call on

• sell out

• sum up

If the human race stays on Earth, it will __________.

• end up

• die in

• die out

• cut back

We do not know when or how humans will become extinct. We may ___________ natural resources.

• come up with

• end up with

• run out of

• put forward

Perhaps a deadly virus could ______ us ________.

• wipe out

• die out

• carry out

• ruled out

If we ___________ a colony on Mars, our chances of survival will be better.

• set out

• set in

• set up

• set down

Our chances of long-term survival will ___________ dramatically if we build a colony on Mars.

• go out

• go in

• go down

• go up

Experts have ________ that a small group of humans could multiply into a colony of millions within a few centuries.

• worked out

• worked up

• gone over

• gone under

A group of just eight humans could ___________ a colony of millions in just a few centuries.

• turn out

• turn over

• turn into

• turn in