In order to produce more grain, it that the area of farmland .
A. is demanded, being increased
B. has been demanded, be increased
C. demand, should be increased
D. demands, should increase
网友回答
A. is demanded, being increased
(答案→)B. has been demanded, be increased
C. demand, should be increased
D. demands, should increase
解析：本题考查时态及虚拟语气。根据语境可知，那个地区已经被要求，故用现在完成时的被动语态，demand + that从句，用should + V原形，根据语境用被动，选B。