Mutualism is relationship between animal species which in both benefit .

You wanted me to tell you about what I was doing here and how waslife 

He has less friends in his class now than he had last year

Mosquitoes are such fast breeders that it is almost impossible to control them either by draining areas where they breed or to spary them with pesticides

Since fireworks are dangerous, many countries have preventing business to sell them.

The number 8.5 is an example of a “mixed number” because it is composing of an integer and fraction

The function of pain is to warn the individual of danger, so he can take action to avoid more serious damage

Air pollution, together with littering, are causing many problems in our large, industrial cities today.

As the marathon runner reached the half-way mark, he, being hot and was soaked with perspiration, stopped to rub down with a towel.

Because of its vast tracts of virtually northern forest, Canada has one of the lowest population density in the world.

They wrote letters to each other. It could take days or even weeks for letters to be ......……

Nobody bothered with telling me that the school had decided to have a special holiday on Friday

Mary put on her scarf  .................  she ...............  not get cold.ould

After writing it, the essay must be duplicated by the the student himself and handed into the department secretary before the end of year

One reason birds have been so successful is because of their able to escape danger quickly

Choose the word or phrase among A, B, Cor D that best fits the blank space :
Time ..…….. and bond together is essential for any crew.

Margaret Gorman, she was the woman chosen as Miss America, died in 1995 at age of ninety.

To those who favorite free trade, revival of barter can suggest nothing less than a disaster.

It’s a lovely old house, I agree, but can we afford moderning it?

They are going to have to leave soon, and so do we.

Canada is made up of ten provinces and two territories, with governmentalbeing divided between the federal government or the provinces.