[交流] Funny English quiz in everyday（NO.39）

Previously

Q: Where should the milk be best stored?
A: In a cow.

List of prize winner：  Tessatt  wine0431  ANDPing  祯嗳溢誓  凌宇雷池
Congratulations！

New Month, New Rules~

1. Please don't write the answer in the post directly, you have to reply me the expression to show that you want to join the quiz.
2. Please don't use the button "edit" to join the quiz, a new reply will be welcome.
3. If you write the answer by accident, please edit it as soon as possible, or I will not give you the reward this time.
4. When you decide to join the quiz, please give me the answer by massage of emuch(站内消息) in two munite after you reply .
5. We can communicate with each other in my post only except the answer of the quiz.
6. I'll give my one bb to the first five chongzis who give me the right answer and at the same time, obay the rules.
7. I'll sent both the right answer and the list of ID who get the bb in the next post.

Today’s Question
What object has keys that open no locks, space but no room, and you can enter but not go in?


We will hold this column everyday.
If you missed it this time, please come on and come here early,
then use your smart head to find the answer.
Good luck to you!
Have fun here!
You will always be welcome, trust me!
This time I made a big mistake that this post should have been presented yesterday. However, yesterday I did not come back home and completely forgot the activity. I am very sorry to Miss seagrove and also today she reminded me of this by QQ message this morning. Please feel free to do it now. Have a nice day!