My elder sisters, both of them were doctors, said they were too busy to pick me up.

A. elder

B. both of them

C. too busy

D. to pick

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.

Since vitamins are contained in a wide variety of foods, people seldom lack of most of them.

A. are

B. in a

C. variety of

D. lack of

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.

I feel both excited and nervously because I have an interview tomorrow.

A. have

B. nervously

C. excited

D. feel

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.

Humans (A) have done (B) great advances (C) in technology at the expense (D) of the environment.

A. Humans

B. have done

C. great advances

D. at the expense

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.

Chemical engineering is based in (A) the principles (B) of physics, chemistry (C), and mathematics (D).

A. in

B. principles

C. chemistry

D. mathematics

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.

English (A) is speaking (B) in many countries (C) in the world (D).

A. English

B. speaking

C. many countries

D. the world