The workers wore glasses over their eyes to keep them.A. saveB. safeC. safelyD. clearly

问题补充：

The workers wore glasses over their eyes to keep them.

A. save

B. safe

C. safely

D. clearly

答案：

A. save

(答案→)B. safe

C. safely

D. clearly

解析：keep作系动词，有“保持”之意，其后常接复合宾语，表示“使（某人或某物）保持某种状态或使某一动作继续”，即“keep + sb/sth + 形容词”。如： These gloves will keep your hands warm. 这种手套保暖好。根据句意“工人们戴着眼镜来保证他们的安全”，选B。