After his illness, Robert had to work hard to _________ his classmates.

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.

_________ over long distances is a fact that everyone knows.

If you _________ less last night, you _________ so bad today.

The job requires certain _________ . You have to be good at operating computers and dealing with people

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

The man, of whom the red car is parked in front of our house, is a prominent physician in this town

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions

Almost poetry is more enjoyable when it is read aloud.

Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

The United States come top of the list of countries ranked by economic performances.