To his disappointment,his suggestion that the lab ___ to students every day was turned down.
问题描述：
To his disappointment,his suggestion that the lab ___ to students every day was turned down.
选择should open a还是should be open
答
should be open为什么不用should open 它做动词讲不也是可以吗因为此处为被动语态，表示状态，be open to对.....开放