(A) and establish tighter restrictions for the amount of grain farmers are to be allowed to grow and to encourage
(B) and establish tighter restrictions on the amount of grain able to be grown by farmers and encouraging
(C) establishing tighter restrictions for the amount of grain farmers are allowed to grow and to encourage
(D) to establish tighter restrictions on the amount of grain capable of being grown by farmers and encouraging
(E) to establish tighter restrictions on the amount of grain farmers will be allowed to grow and to encourage
ANS: E
A.B try and establish 錯
C.D establish 跟 encourage 不平衡
只能選E
不過我想請問E選的文法結構
整句主要動詞是try
為啥後面還可以接will be allowed
??看不懂

請求高手指點
TKS