According to the passage, the function of the World Health Organization is taking care of______.

A．He does not earn as much money as his classmates.
B．He does not work as well as his classmates.
C．He does not get enough pay for his ’hard work.
D．He does not have enough time for his study.

A．Any day after Monday,
B．Before the test.
C．On Monday evening.
D．On Friday.