问题
. From this simple concept ________ that has caused a great change in farming.
A:has developed a technique
B:has a technique developed
C:a technique has developed
D:developed as a technique has
B:has a technique developed
C:a technique has developed
D:developed as a technique has
正确答案是：
同类题型
The cinema in our neighborhood is old and small, but ________ is big and modern.
I forgot to bring my pen, would you please lend ________ to me?
There are three ________ students in their school.
The boy didn’t go to schoolhis illness (疾病). [ ]
Can you tell me why________? ——Because I want to help the people there.