Using a verb from the list given below, complete the conversation:
happen / meet / be / see
A: Is Brussels an interesting place?
B: I have no idea. ___________ there.
A)I've not seen
B)I have not happened
C)I have not met
D)I've never been

Hint: The verb with which we need to fill in the blank needs to refer to the act of going to a particular place.

Complete step-by-step answer:

In the given question, we have to fill the blank with the most suitable form of a verb that is given in the question.
In order to do this, let us take a look at the given verbs, one by one.
The verb, happen, is used to refer to an incident while the verb, meet, is used to refer to come into the company of someone. The verb, be, is used to refer to being present somewhere and the verb, see, is used to refer to witness something.
In the given question, the context is visiting a place. In such a context of visiting a place, the most appropriate verb that can be used would be the verb ‘be’, as it is used to being present somewhere. Hence, to fill the blank we need to use an option that uses this verb.
From the given options we can see that the only option in which the verb ‘be’ is used is in option ‘D’, I’ve never been. Though this is a past participle form of ‘be’, it is still the most apt option to be used. Therefore, option ‘D’ is the correct answer. So, options ‘A’, ‘B’ and ‘C’ are incorrect.

Note: In a situation where the meaning of the given option is not clear, use the elimination method and remove the words that you think are least likely to be right, in order to reach the final answer.