Most villagers agree that horses are far more pleasant than tractors but they are less e

问题补充：

Most villagers agree that horses are far more pleasant than tractors, but they are less efficient.

A. looking at

B. to look at

C. to be looked at

D. being looked at

答案：

A. looking at

(答案→)B. to look at

C. to be looked at

D. being looked at

解析：考查时态和语态。句意“大多数村民都同意马比拖拉机好看，但是马的效率不高。”look at“看”，的逻辑主语是villagers，是主谓关系，故用主动；be+形容词+to do sth.是固定搭配。故选B。