Fill in the blank with the most suitable verb:
________ you ever been to Amsterdam?
A verb is used to express an occurrence, action, or state. It is the grammatical centre of the predicate in a sentence.
An auxiliary verb is a verb which gives is used in the formation of tenses, moods, tones, etc.
Option C is correct as ever been indicates the use of present perfect tense. Also, have is used as an auxiliary here.
The other options are wrong as no other tense other than present perfect tense can be used.
The correct answer is C)have