It just isn’t fair. I was working as a waiter last month, my friends were lying on the beach.
A. Whenever
B. Though
C. For
D. While
网友回答
A. Whenever
B. Though
C. For
(答案→)D. While
解析：按照句意：这不公平，上个月我做服务员工作，但是我的朋友躺在沙滩上。I和my ffiends前后对比，though虽然，但是仅有转折没有对比之意，while 意思是“然而，当---时，”既有转折，又有对比之意，符合句意，Whenever每当，for因为，选D.