The other students in the class keep their eyes___________

问题描述:

The other students in the class keep their eyes___________
A.close B.closing C.closed

closed
closed[简明英汉词典]
[kləuzd]
adj. 1 停止营业的, 不开放的, 关闭的 2 封闭的; 排外的; 闭关自守的
故选C