I looked at the men,and I thought my eyes were going.
A.I looked at the men, then I looked at something else. B.I'm afraid to look at the men, so I tried not to look at them any more. C.When I looked at the men, I realized that my eyesight was declining. D.Since I made great efforts to see them clearly, I knew that my eyesight was declining.正确答案C
