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

Trees are designed as neither hardwoods or softwoods.

He was... bachelor with... small income.

He knows to repair the carburetor without taking the whole car apart.

Choose the best answer:

I’d rather you .................... by train.

The journalist has not finished the article on the negotiation already.

You have to take the full course of your antibiotics even if you feel better, ............ your illness will simply return.

Phillip can’t type well. ........................

They were weary of working twelve hour days, seven days a week for subsistence .............

Choose the best answer:
We are discussing about a problem of great...........

Identify the error in each sentence: Exploration of the Solar System is continuing, and at the present rate of progress all the planets will have been contacted within the near 50 years.

The novel has had a tremendous impact on ________ and publishing markets.

Our flight was delayed, but we finally _______ shortly after midnight. 

Children should be taught that they have to___________everything after they use it. 

A ________ is a report in a newspaper or magazine in which a writer gives his opinion of a book, a film, or a play.

Stand up straight, breathe deeply hold your head up, and no look down!

Identify the one underlined word or phrase that must be changed in order for the sentence to be correct.

As you come to each town, however small, you will see a sign which states the name of the town and how many inhabitants does it have.

After travelling all day, he was completely______.

Identify the error in each sentence: 

My uncle has just bought some expensive furnitures for his new house

The nitrogen makes up over 90 percent of the Earth’s air, the gaseous mass surrounding the planet.

Deep cratered, the sun is over 2100 miles in diameter with negligible gravity and atmosphere.