A growing number of students spend so much time on internet and TV with less and less rest

问题补充：

A growing number of students spend so much time on internet and TV with less and less rest and study, which parents and educators very much.

A. settles

B. conquers

C. concerns

D. commands

答案：

A. settles

B. conquers

(答案→)C. concerns

D. commands

解析：考查动词辨析。Settle解决；定居；conquer征服；concern使...担忧；command命令；指挥；句意：很多学生把很多时间花在看电视上，休息和学习的时间越来越少，这让父母和老师们很担忧。根据句意说明C正确。