New Words：

common ['kɔmən] adj. 常见的；通常的；普遍的

Sample Sentences：

Rabbits and foxes are common in Britain.
He's not an officer, but a common soldier.
Smith is a very common last name in England.
It was common for families in old days to have cooks.

New Words：

flush [flʌʃ] v. 冲洗；脸红
flush toilet 抽水马桶；座便器
pipe [paip] n. 管子

Sample Sentences：

Flush clean water through the pipe.
Flush the pipe out with clean water.
They flushed the drugs down the toilet.
The workers are laying pipes under the road.
The first flush toilet was invented in England.

New Words：

policy ['pɔləsi] n. 政策；方针
presidential [ˌprezɪˈdenʃl] adj. 总统的

Sample Sentences：

No smoking is a company policy.
One of the new government's policies is to cut taxes.
He is one of the front runners in the presidential election.

New Words：

environ [in'vaiərən]
v.包围；环绕
n.附近，近郊

environment [in'vaiərənmənt] n. 环境

Sample Sentences：

This is a town environ by/with forests.
They used to live in the environs of Paris.

An unhappy home environment can affect a child's behaviour.
They plant trees in the desert area to keep the sand and protect the environment.

New Words：

general ['dʒenərəl]
n.将军
adj.一般的；总的；普遍的；大致的；大概的

Sample Sentences：

I have a general idea of how a car works.
In general boys like sports more than girls.
The general ordered the soldier stood straight.
They fired in the general direction of the enemy.