Lassen National Park, the situation of a dormant volcano, is one of the most beautiful but least visited parks in the western United States.

Zoos in New Orleans, San Diego, Detroit, and the Bronx have become biological parks where animals roams free and people watch from across a moat.

Many scientists contributed to the development of television, whether no one can be said to have invented it.

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

What you would do if you could speak French well? 

If we hadn’t got lost, we ____arrived much earlier. 

By the end of the month, I’ll be working for this firm for a year.

Please open ..................door. 

A smile can be observed, described, and reliably identify; it can also be elicited and manipulated under experimental conditions

When contented and occasionally when hunger, cats frequently make a purring sound

People in this region cultivate mainly rice and vegetables.

Martin Luther King Jr.’s magnificent speaking ability enabling him to effectively express the demands for social justice for Black Americans.

Since the computer was invented, the work of accountants have been simplified.

Our tomatoes are ripen nicely, they’ll be ready to eat in about a week

Even the smallest pulley can be done stronger by adding wheels to its system to create more leverage

Disease is not as widespread than before because of better preventive medicine and vastly improved nutrition.

The Medal of Honor is the higher award for military bravery that can be given to any soldier of the United States

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

The geology professor showed us a sample about volcanic rock which dated back seven hundred years.

Nobody knows the truth, _    ?

A computer networks usually includes either selected employees of a particular business or or people who do not work together but have similar interests.

Mr. Smith is going to buy a new Japanese car, doesn’t he ?