Multiple choice My grandparents ................. in the USA since 2010 have been living has been living had been living are been living Reveal answer Fill a bubble to check yourself A Correct answer Explanation "My grandparents" is a plural subject, which requires the plural auxiliary verb "have". The present perfect continuous tense "have been living" is used with "since 2010" to describe an action that began in the past and continues in the present.