simple, compound and complex sentences

Some foods taste good, _____ they do not have many nutrients.

• and

• but

• because

We should keep the school air clean ------ this will improve students’ concentration and help them to learn better.

• although

• but

• because

Germs can cause infections in parts of our body _____can make us feel unwell.

• and

• but

• if

______ we all start conserving the environment, we can all enjoy better living conditions.

• Which

• Although

• When

"Some of the participating schools have also decided to use green cleaning products." is a ____ sentence.

• simple

• compound

• complex

"Chemicals can affect the air quality and cause health problems like asthma and skin rashes." is a ______ sentence.

• simple

• compound

• complex

"Two common symptoms of asthma are coughing and breathing with difficulty." is a ______ sentence.

• simple

• compound

• complex

Our natural resources will be ______ if we don't conserve them.

• enriched

• depleted

• widen

Choose the synonym of the underlined words.

Scientists are becoming more and more concerned about how to dispose of waste safely.

• keep

• reuse

• get rid of

______ we all adopt a green lifestyle, we will help conserve our natural resources.

• If

• But

• Although