Mark the letter A, B, C,or D on your answer sheet to show the underlined part that needs correction.
A professor of economy and history at our university developed a new theory of the relationship between historical events  and financial crises.

A.economy

B. developed

C.between

D.financial crises

Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction.

A professor of (A)economy and history at our university (B)developed a new theory of the relationship (C)between historical events and (D)financial crises.

A. economy

B. developed

C. between

D. financial crises

Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction.

A professor of (A)economy and history at our university (B)developed a new theory of the relationship (C)between historical events and (D)financial crises.

A. economy

B. developed

C. between

D. financial crises

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.

Energy research, medicinal, tourism, and copper are important to the economy of Butte, Montana.

A. medicinal

B. copper

C. to

D. economy

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.

10 Breakthrough Technologies 2017, such as reversing paralysis, self-driving (A) trucks, the 360-degree (B) selfie,.., will effect (C) the economy and our politics, improve (D) medicine, or influence our culture.

A. seft-driving

B. 360-degree

C. effect

D. improve