Why do two separate teams compete against each other?

It’s very___________ to swim there. The water is healthy polluted.

Read the following passage and answer the questions. 

There are two main kinds of sports: team sports and individual sports. Team sports are such sports as football, baseball, basketball and volleyball. Team sports require two separate teams. The teams play against each other. They compete against each other because they want to get the best score. For example, in a football game, if team A scores 4 goals and team B scores 3 goals, team A wins the game. Team sports are sometimes called competitive sports.

Are there three main kinds of sports?

Find the word which has a different sound in the underlined part:

What will you do to protect environment, if it goes on polluted? (Answer the question)

We make the air dirty because we use the car all the time. (Rewrite this sentence with “If”)

Choose the correct answer A, B, C or D to complete the passage. 

People need to breathe. If they don’t breathe, they (1) ____________ die. But how clean is the air people breathe? If they breathe (2) ___________ air, they will have breathing problems. Plants and animals need (3) __________ air too. A lot of the things in our lives create harmful gases and(4) _________the air dirty, like cars, motorbikes, and factories. Dirty air is called polluted air. Air pollution can also make our Earth warmer.

Rewrite these sentences as directed in the brackets. 

I had a bad cold, so I didn’t go to school yesterday. (Rewrite this sentence with “because”)

You can watch Harry Potter on TV_____________you can read it.

most/ London/ tea/ is/ popular/ the/ drink/ in. (Rearrange the words to make a sentence)

_____________walk in the rain. It’s not good for your health.

If the weather__________good, I____________camping with classmates.