问题
选择题
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
答案：B
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。