题目内容：

You shouldn't be late for the meeting any more(改为祈使句)
It's ten years since the Littles started to work in China(改为现在完成时)
We are going to the mountains so that we can enjoy the cool weather(句意不变)
I think there is something wrong with the digital camera(改为否定句)
Someone saw her practice dancing at the foot of the hill(改为被动语态)