4.Put the verbs in brackets in the present,perfect or past simple.
1) …………to the opera? (be)
2)Yes,I ………...last year. (go)
3)Where ……….you………him? (see)
4)I ……..him at an airport. (see)
5………..your brother ………to South Korea? (be)
6.Yes,he …......He ………..to Seoul (be)