* choose the correct item.
1 the survivors must wait/have been
waiting for help for over two days now.
2 jenny can't have taken/be taking the car;
she always takes the bus to work.
3 having seen/seeing the wildlife show
many times, i'd say it's really good.
4 you should be/have been there; seeing
rhinos in the wild was amazing!
5 i'd like to be helping/to help at the
homeless shelter. where is it? ​