问题补充：
--- people are taking action to protect the environment now.
--- Yes. of my classmates come to school by bike now.
A. Less and less; Five eighths
B. Less and less; Five eighth
C. More and more; Five eighth
D. More and more; Five eighths
答案：
A. Less and less; Five eighths
B. Less and less; Five eighth
C. More and more; Five eighth
(答案→)D. More and more; Five eighths
解析：Less and less越来越少； More and more越来越多。句意：现在越来越多的人在采取行动来保护环境。——是的，我的同学们的五分之四现在骑自行车上学了。当分数的分子大于一时，分数的分母用复数形式，故选D。
