More and more students too much homework and they are really tired of it.
A. plain about
B. care about
C. learn about
D. hear about
网友回答
(答案→)A. plain about
B. care about
C. learn about
D. hear about
解析：考查动词短语的用法。plain about抱怨；care about担心，关心；learn about学习；hear about听说。根据下文的学生对作业的厌倦，可以推测，他们“抱怨”作业太多。故选A。