1). Be2). Being3). Been4). Were

1.	1). Be2). Being3). Been4). Were
Answer» The SENTENCE uses the auxiliary verb 'have', indicating that option 4 cannot be correct. 'Be' is a PRESENT tense form of the verb, 'being' is its continuous form and 'been' shows the past participle form of the verb 'be'. Here, as 'have' is used, the verb must be present in past participle form, as GIVEN by 'been'. Therefore, the correct ANSWER is option 3.

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