_________ can be linked to their genetic makeup. 

Mark the letter A, B, C, or D to indicate the correct option that best fits each of the numbered blanks from 18 to 23.

Read the following advertisement/school announcement and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 10 to 12.

a. Dear Sir or Madam, I am writing to apply for the post of a volunteer at your charity centre.

b. Actually, last summer, I spent a month there helping to take care of young kids. I am also patient and caring.

c. I look forward to hearing from you. Yours faithfully.

d. I can spend hours listening to and talking with other people. I am available for an interview on any day after 4:30 p.m. If my application is successful, I can start work immediately.

e. I saw the advertisement on my school notice board last week. I have experience in volunteering in my local orphanage.

Read the following passage and mark the letter A, B, C, or D to indicate the correct option that best fits each of the numbered blanks from 24 to 28.

Read the following advertisement/school announcement and mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 13 to 15.