When actively hunting,dolphin send out transmitting about five signals every second.

The most common  form of treatment it is mass inoculation and lorination of water sourc.

Before she moved here, Arlane had been the president of the organization fo since four years.

One reason birds have been so successful is because of their able to esca from danger quickly.

-Mai: “ What are you going to do this weekend, Lan?”
-Lan: “___________”

Both Mr. and Mrs. Smith are explaining the children the rules of the game

Compact discs, which appeared on the market in the early 1980s, produce sound better quality than those of Standard phonograph records.

My father used to giving me some good advice whenever I had  problem.

The artist tried stimulate interest in painting by taking his students to th museums.

In order no money would be wasted , we had account for every penny we spen

Hardly he entered the office he realized that he had forgotten his wallet.

Our civilization is so commonplace to us that rarely we stop to think about its complexity.

Tests have been performed determine whether studying TOEFL question will help students rise their test scores.

Mary and her sister just bought two new winters coats at the clea sale.

There is not equivalent to this word in any other language.

Visitors may realize that even though can’t make their homes in Da Lat City, they can take away (with them memor of their beauty .

Although there are more than 2,000 different variety of candy, many them are made from a basis boiled mixture of sugar, water, and corn syrup.

There are also other hobbies that I ____________ in for a while. 

Fee Nitrogen is chemically inert and combine with other element only since very high temperature or pressures.

This bird’s tail is double as long as its body.

Most of the magnesium used in United States comes from the sea water.