You will never know the result _________ you try.
举一反三
- 8. ______ (On/At) the other hand, you’ll never know if you can do it till you try.
- ____ you try, you will never succeed.
- If you don't know what business to start with, you can pick one at will and give it a try.
- Try the experiment yourself or you will know the reason.（)
- You should keep those old bottles --you never know ______ you might need them.