Passive Voice

In 1900 there were 1.6 billion people in the world, but today that number is over 6 billion. In the last century, a lot of the world’s forests 1_______ (destroy) to provide wood for making furniture and paper.

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

In addition, many of the world’s seas and rivers 2______ (pollute).

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

Another problem today is how to provide food for the growing number of people in the world. New ways of growing food 3______ (need) very soon.

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CCSS.L.3.1E

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1C

CCSS.L.5.1D

Some new foods 4______ (discover) by scientists in the last few years, and in the future we will eat more of these.

Tags

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

Living space will be another big problem in the future. Perhaps one day new cities 5______ (not build) on land any more − we will build them on or under the sea!

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

Since computers were invented, they 6______ (use) by people in many different ways.

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

For example, computer-controlled robots 7______ (give) jobs in factories because they can do some things much faster and better than people.

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

But some people are worried about this. They think that our world 8______ (control) by computers and robots one day.

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

Some robots can learn from their mistakes, and one day they may become intelligent. In the future perhaps all the important decisions 9______ (make) by robots.

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CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D

And when that happens, people 10______ (not need) any more!

Tags

CCSS.L.4.1B

CCSS.L.5.1.B-D

CCSS.L.5.1B

CCSS.L.5.1C

CCSS.L.5.1D