The Traditional Answer:
The most common answer is a phrase, not a sentence: "The quick brown fox jumps over a lazy dog." This is a well-known pangram (a sentence that uses all letters of the alphabet).
A More Complex Option:
You can create a longer sentence that incorporates all the letters:
"The five boxing wizards jump quickly."
Creating Your Own:
You can try making your own pangrams! It's a fun challenge.
Important Note: These solutions usually use a specific set of letters, often from the English alphabet. There might be variations for different alphabets.