问题描述：
猜一猜下面句子说的是什么东西!
1What's black when it's clean and white when it's dirty?
2What has a lot of teeth but no mouth?
3Which is the smallest room in the word?
4What goes up but never comesdown?
5What can peple make but not see?
6What has keys but no doors?
7What can travel around the world and still stay in one corner?
8What goes up when rain comes down
9I'm in the room and i can talk to you ,yet you can't talk to me.What am
10They're twins and they work together.They are near but they never see each other.Who are thy?
11What table can be eaten?
12What flower can you eat?
1What's black when it's clean and white when it's dirty?
2What has a lot of teeth but no mouth?
3Which is the smallest room in the word?
4What goes up but never comesdown?
5What can peple make but not see?
6What has keys but no doors?
7What can travel around the world and still stay in one corner?
8What goes up when rain comes down
9I'm in the room and i can talk to you ,yet you can't talk to me.What am
10They're twins and they work together.They are near but they never see each other.Who are thy?
11What table can be eaten?
12What flower can you eat?
问题解答：
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