It is easy to open a shop but hard to keep it always open.

I love it when someone's laughter is funnier than the joke.

Fish only species that are not of concern, threatened or endangered.

Use water sparingly and keep water clean.

The plants and animals of the sea fall into three major groups.

How different a picture we now have of the ocean as the sea has begun to reveal its secrets.

Keep only fish that you will eat; release the rest.

At times, this can be risky, and the keepers have been injured and one has been killed.

We can do something to save the earth.

One in seven accidents is caused by sleepy drivers.

We cannot clean up our polluted rivers and seas overnight.

Rapid run-off would cause frequent floods and leave little water during fry seasons.

Rapid run-off would cause frequent floods and leave little water during fry seasons.

Toxic chemicals continue to be dumped in the North Sea.

When did Nguyen Hue defeat Thanh enemies?

Due to an increase in population and the use of nearby land for farming, there are toxic levels of chemicals in the water.

This national park is special because it has plants and animals from both tropical and temperate zones.

An interesting feature of this park is the Orphanage where lots of orphaned or abandoned animals are taken care of.

You can slide the front seats forward if necessary.

Visitors, especially children, can go there to learn how to recognize the different species of animals and plants.

The chairs felt hard and uncomfortable.

The best time to visit is during the dry season, from October to April, when the hard forest rain is over.

My suitcases are so heavy.

For many young people in Britain,  being in one of the school teams and playing in matches is very important.

If you don’t feel well, go to bed and rest.

Name some famous football players in the world.

With the victory over Germany in the final match, Brazil became the first team to win the trophy five times.

The World Cup is followed with great interest around the globe- the final game of the 1994 tournament was played to a television audience of more than 1 million viewers.

That draught is too much for my horse to pull.

The sun soon dispelled the thick fog.

The bank announced that it was to merge with another of the high street banks.

It was brave of you to speak in front of all those people.

When I was young, I admired clever people. Now that I am old, I admire kind people.

A narrow passage led directly through the house into the garden.

China has become the third country in the world which can independently carried out the manned space activities.

Mr. Smith's new neighbors appear to be very generous.

We have been out of touch him since he moved to London.

To be prepared for war is one of the most effectual means of preserving peace.

I clearly remember talking to him in a  chance  meeting last summer.

The next day the union voted to begin an indefinite strike.

We don't  know  what is good until we have lost it.

She had a cozy little apartment in Boston.

Rich families find it easier to support their children financially.

He had never experienced such rudeness towards the president as it occurred at the annual meeting in May.

Man alone is born crying, lives complaining, and dies disappointed.

There is growing concern about the way man has destroyed the environment.

They don't seem particularly worried about the situation.

It's cool and quiet everywhere except in the kitchen.

I feel that learning English will help my chances of promotion at work.

Advanced students need to be aware of the important of collocation.