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

Woody Guthrie wrote thousand of song during the lifetime, many of which became classic folk songs .

Isle Royale National Park in Lake Superior can only be reached the boat .

My father gave up smoking two years ago.

What about the recreational reading you are supposed get into the habit to do n a regular basis ?

The ozone layer must be protected because it shields the Earth from excessive raviolet radiations .

Without a hesitation, he did a decision not to take the course 

The surface conditions on Mars is the more imilar with the Earth’s than those of nay other planet the solar system

A factor in the formation of desert are  high mountains, which shield he region, from rainfall .

Each year, people around world spending billions of dollars buying merchandise on Internet

Salt was too scarce and precious that it was used as money.

In spite of  her physician handicaps, Hele Keller graduated from Radcliffe with honors.

A conductor uses signals and gesture to let the musicians to know when to play arious parts a composition.

Choose the correct answer to complete the sentence. "The major shortcoming of ASEAN as an organisation is the inability to go through many declarations, agreements, and instruments _____ they have proliferated over the years."

Have you learnt the reason why does water of the ocean becomes blue?

I would have gone with him to Washington except I had had time .

Many heavy work that was once done hand can now be done more easily with the help compressed air.

All of the mammals, dolphins are undoubted among the friendl to human.

Marta (being chosen as the most outstanding student of her campus made parents very happy.

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

Snapping turtles are easily recognized because of the large head, the long tail the shell that seems unsufficiently to protect body.