Choose the correct answer to complete the sentence. "Deforestation is one of the _____ environmental threats to the ecological balance in the world"

A thunder usually follows lightning by five seconds for every mile between the flash and the observer.

Some snakes have hollow teeth are called fangs that they use to poison their victims

In a new initiative announcing today, police are to take a harder line on speeding motorists.

“I’m not staying any longer.” “I wish you ____.” 

Choose the best option:

We have to suffer a lot of floods due to our serious _____ of forests.

“I’m sorry you failed the test.” “Frankly, I wish I ____ harder.” 

It’s not worth to spend money on things like cheap clothes

Since the Great Depression of the 1930’s, social programs such as Social Security have been built into the economy to help avert severity business declines

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

It has been reported that during any twenty-four hour period, a minimal of three hundred North American women start their own businesses.

Sorry, I can't find the number. I remember writing it on ............. back of an envelop. 

The shore patrol has found the body of a man who they believe to be the missing marine biologist

For many years, scientists studying the effects that the sun has on human skin.

Many roads and railroads were built in the 1880s because of the industrial cities needed a network to link them with sources of supply.

This time last year, I was cycling under the rain along a country road in France with a friend of mine

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

New uses for plastics were found during the 1950’s and 1960’s in medicine, space, research, industrial, and architecture.

Despite television is the dominant entertainment medium for United States households, Garrison Keillor’s Saturday night radio show of folk songs and stories is heard by millions of people.

There is a rumour that the army is about taking power, though this has been denied by government sources.

The midnight sun is a phenomenon in which the Sun visible remains in the sky for twenty-four hours or longer.