OG11-Q54?

54.When congress recovenes,some newly elected members from rural states will try and establish tighter restrictions for the amount of grain farmers are to be allowed to grow and to encourage more agreesive sales of United States farm products overseas.

答案是E.)to establish tighter restrictions on the amount of grain farmers will be allowed to grow and to encourage

我想请教的是,grain和farmers之间为什么可以没有that来连接?谢谢!

我想应该是that作为grain的指代词，在farmers are to be allowed to grow中是做grow的宾语，根据语法规则，此时that是可以省略的。
这个句子的关键是平行结构，其次是enable  sb. to do sth..

以上仅做参考。

我的理解，严格按照GMAT的语法规则，written English应该不可以随便省略指代词that（宾语从句OG是一再明确的），只能解释成该答案是最优选择。

类似的还有OG 11th 5:

As its sales of computer products have surpassed those of measuring instruments, the company has become increasingly willing to compete for the mass market sales   it would in the past have conceded to rivals.