How can we help to reduce greenhouse gases when using computers? _________ down the computer when we are through with it; put it on stand-by when we leave it for a while.

Shut down the computer when we are through with it; put it ———— when we leave it for a while.

We can try to reduce the amount of greenhouse gases that we put the atmosphere.

A、

away

to

off

into

When we use electricity, wu put greenhouse gases______ the air.

A、

away

off

on

into

How can we avoid plagiarizing when using testimony?

A、

Paraphrase the ideas.

 Identify the source.

Use quotation marks.

Give thanks.