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.

It was CFCs. which were used in aerosols, refrigerators and solvents, which made the dangerous hole in the ozone layer over Antartica.

A. CFCs

B. were used

C. which 

D. over 

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.

Providing relief after the disaster necessitated the mobilization of vast amounts of food, medical supply, and people.

A. Providing 

B. vast amounts

C. medical supply

D. people

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

He went to a seaside resort because he was keen on water- skiing.

A. bored with

B. proud of 

C. tired of

D. impassioned