There are useful ways you can use to change the verb to noun with the right suffix:

Locate the verb: a verb is an action word.
Add an appropriate determiner before the word: for example use (the) , (a) or (an) before the verb so you can make sense of it when you pronounce it.
Rewrite the sentence: write the sentence again and try to change the location of the verb after you add the suffix. Ex: Many students prefer to choose their groups members, Choosing groups member is a preference to many students.
Consult a dictionary to double check your suffixes: it is a good way especially when English language is not your first language.