1. Maths is one of        (important) subjects.

4. 結(jié)果        5. 在事故中         6. 在那些時(shí)代！      

1. 成千上萬(wàn)的        2. 造成污染          3. 大量       

A nurse is a person              sick people.

4. 一般而言，假日里公園里擠滿了人。

            ，the parks are full of people on holidays.

3. 他爺爺當(dāng)一輩子的老師。 

His grandfather worked        a teacher                    .

2. 在炎熱的夏天，農(nóng)民們?nèi)匀桓苫睢?/p>

Farmers are still working                         .

1. 在過(guò)去，我們住的小屋子里沒(méi)有電燈。

There were no              in our tiny house in the past.

4. They got married five years ago.

They              married       five years.

3. We must take good care of the old.

We must             the old       .