Переделать предложения, используя present perfect passive 1) jack \not to see\ since last year 2)the olympic games \to hold\ since the ancient times 3)thanksgiving day \to celebrate\ for more than 200 years 4)they \to know\ for a long time 5)mercedes cars \to be popular\ for more than 100 years
has been held
has been clebrated
have been known
have been popular