It is often recommended that children chances to get close to nature.A. are offeredB. be o

问题补充：

It is often recommended that children chances to get close to nature.

A. are offered

B. be offered

C. should offer

D. must be offered

答案：

A. are offered

(答案→)B. be offered

C. should offer

D. must be offered

解析：考查虚拟语气。Recommend推荐，建议，后面的宾语从句要用（should）+do的虚拟语气，排除A,D；且主语children和offer之间是动宾关系，所以用被动语态。选B。