a word is missing between that and enhance

we can't deny that enhance the appearance is the demand of people because everyone wants be more good looking in other eyes

To identify the missing word, we can start by breaking down the sentence and identifying the grammatical structure. The sentence seems to be discussing the demand for enhancing one's appearance based on people's desire to be more attractive in the eyes of others.

Let's take a closer look at the sentence: "We can't deny that enhance the appearance is the demand of people because everyone wants be more good looking in other eyes".

In the context of the sentence, it seems that a noun is needed after "that." Since "enhance" is a verb, it doesn't seem to fit grammatically as it is.

To complete the sentence while maintaining its meaning, we could insert a noun or a noun phrase after "that." One possible word could be "improving," so the sentence would read:

"We can't deny that improving the appearance is the demand of people because everyone wants to be more good looking in the eyes of others."

In this revised sentence, "improving" acts as a gerund (a noun form of the verb "improve"), which fits grammatically and maintains the meaning of the original sentence.