7.The government killed 14,000 chickens to stop the bird flu from spreading. (保持原句意思)The government killed 14,000 chickens ____ ____ the bird flu can be stopped from spreading.
问题描述：
7.The government killed 14,000 chickens to stop the bird flu from spreading. (保持原句意思)
The government killed 14,000 chickens ____ ____ the bird flu can be stopped from spreading.
答
to prevent