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.

What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population.

A. looked into

B. come up with

C. thought over

 D. got round to

A. Unless success comes to those who have enough courage and will, gender differences cannot prevent a person from pursuing a job.

B. Gender differences cannot prevent a person from pursuing a job unless success comes to those who have enough courage and will.

C. Gender differences cannot prevent a person from pursuing a job because success comes to those who have enough courage and will.

D. Gender differences can prevent a person from pursuing a job because success comes to those who have enough courage and will.

A. John apologized Jean for breaking her vase.

B. John apologized Jean for having broken her vase

C. John apologized to Jean to have broken her vase.

D. John apologized to Jean for haing broken her vase.

A. assistance

B. help

C. guidance 

D. aid

A. bend

B. turn

C. rise

D. lift

A. response

B. gratitude

C. recognition

D. knowledge