Is it possible to make a sentence with more than 40 words?

Absolutely! It's certainly possible to make a sentence with more than 40 words, although they can become quite unwieldy and difficult to understand.

Here's an example:

"The bustling city, with its towering skyscrapers and vibrant street life, offered a stark contrast to the serene countryside, where rolling hills and whispering willows provided a peaceful retreat for weary travelers seeking solace from the relentless pace of modern life."

This sentence has 44 words. You can easily make sentences even longer by adding more descriptive details, complex clauses, or lists of items.

While it's grammatically correct, it's generally best to keep sentences relatively concise for readability.