MOST PEOPLE YOU MEET WILL POLITE TO YOU ___ YOU ARE POLITE TO THEM...
15. Most people you meet will polite to you ___ you are polite to them,
a. in case
b. only if
c. unless
d. if
15. Most people you meet will polite to you ___ you are polite to them,
a. in case
b. only if
c. unless
d. if