There are many aspects that are involved in taking care...

Câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 26 to 30.
There are many aspects that are involved in taking care of elderly or aged people. Those (26) ____________have the responsibility of taking care of the aged need to be (27) ____________of the various needs and requirements that the elderly have. Elderly individuals who live on their own, without the support of anyone, may have a certain amount of financial needs. Such people need to fend (28) ____________themselves for everything, including food, groceries, medicines etc. Pensioners have the benefit of a steady source of monthly income. Those who do not have any (29) ____________or other source of income would have to live entirely on their savings or through special senior citizens' government financial schemes or (30) ____________from charitable organisations.
(Adapted from http://www.englishdaily626.com)
The word or phrase which best fits the gap (27) is...
A. know
B. understand
C. aware
D. learn