We were bestest friends and like brother and sisters . We hung out together , did homework together ( even did each other 's some times ) , went off campus to lunch together , did stuff on the weekend , and were basically joined at the hips three - ways . Our senior year , I noticed that my two friends would disappear more and more . They were n't always available for lunch or homework or riding around after school .

Question: Why did my two friends probably disappear more and more ?
Answer: They wanted to eat lunchThey had to do homeworkThey were brother and sisterNone of the above choices .