The usage is acceptable, if I correctly understand the third sense of incapable in OED 1:

“Of such a nature, or in such a condition, as not to allow or admit of; not admitting or susceptible of. … Equivalent to ‘that cannot’ with an infinitive passive; e.g. ‘all on your terms’. “Capable of measurements “. /. /.. “… [

Why I need advice in my life?

What is the use of substitute in this context? From English/Francised from fr., en. Ersatz says “Made in imitation” (even artificial). How would not you describe the fact that the palm trees ersatz with other plants?

Synonyms include artificial, faux, imitation, knock off.

Aside from being an adjective, Ersatz is a noun. However, in Chinese, it is a noun. In terms of nouns, previously-suggested deception perhaps matches best in the example sentence, “We felt betrayed by the ____”. So using terms like sham and bogosity have more-negative connotations than are warranted and appear natural. I should have checked the question to be sure. What is engendered by fake trees? Are deceptions made better by knowing they’re made? One might fill in the blank with unbelievability, or maybe with a longer phrase like “the incongruity or shabbiness or unreality of trying to improve on nature”

In both examples the verb and object agree with the singular subject, “A classmate and I”. The singular “student” should be plural “students”

I was one of the first two x students to be awarded this scholarship (where x is name of college) to better emphasize your achievement and avoid the non-specific and distracting phrase, “a classmate”.

How does the sense “to nurture, to foster, to tend” in Cultivate indeed work, but the usage is not perfectly natural? I am not very happy with the way one maintains friendships; I am concerned enough to cultivate one’s personality. Is it a better idea to keep friendships?

If you mean he started out with a personality nobody can disapprove of, you might say the person has or has such a personality. If he purposefully developed his personality, you might say developed or portray? I don’t recommend cultivating, though I have a good excuse for not recommending it.

Both sounds naturally and I would anticipate to hear different versions. What time did you choose to answer this question?

When should I do this?

Note, this is not to say that the phrases in question don’t occur; ngrams for What is the right time,When is the right time (or with lower-case w’s ) clearly shows that they do, with use of the When… form rising steadily since the 1970’s. I should ngram “What is the right time, When is the right time, What time, When should” for example but with lesser numbers, use of “what time” and “When should” outstrips use of those phrases, perhaps beyond the level attributable to the inherent matching advantage of two-word phrases against five-word phrases.

What would have happened if “It is the right time” was placed between the first word and the final phrase in the examples?

How does Effable exist anyway, except for being archaic? It is antonymic to ineffable (“beyond expression in words”); another word still commonly used.