Identify if the given sentences are correct or incorrect. Correct the ones that are wrong-
You wish to have more money than you have now. How do you express it?
I wish I would have more money.
a) Wrong ; I wish I had more money.
b) Wrong ; I wish I have more money.
c) Wrong ; I wish I will have more money.
d) Correct.

Hint:The given sentence is completely wrong, as we don’t use “would” with “wish”. When used together, a "that" has to be placed in between the two words. For example, I wish that John wouldn't eat all the chocolates.

Complete answer:
 The above sentence is obviously incorrect, as it is not grammatically or logically satisfying. We have to check if the tenses are correctly placed. Also, we have to pay attention to other parts of speech, if they are well positioned or not.
Now, let us examine all the given options so that we can find out the correct answer.
Option ‘a’ is Wrong; I wish I had more money. This is the correct answer as, the usage of “wish” and “had” is correct and there is no grammatical mistake as well.
Option ‘b’ is Wrong; I wish I have more money. This is not the correct answer, as “have” shouldn’t be used with “wish”. The tense formation is wrong.
Option ‘c’ is Wrong; I wish I will have more money. This is also incorrect because - future tense cannot be used with “wish”, in this sentence.
Option ‘d’ is Correct. This option cannot be the correct one, because the given sentence is not correct.
As we have analyzed all the given options, we can easily figure out the correct answer for the given question. Here, the correct sentence is- "I wish I had more money". It is the only sentence that is grammatically correct.
Hence, the correct answer is option ‘a' and the given sentence is wrong.

Note:
While correcting any sentence, one initially needs to check the tenses, and if the particular tense form is fitting in the given sentence or not.