Michael ________ ________ a volcano.
has climbed
Ruben and Alvaro ______ (not) ________ the island.
Ruben and Alvaro haven't explored the island.
__________ Maria __________ a jungle before?
Has Maria explored a jungle before?
_________ a man _________ on the moon?
Has a man walked on the moon?
I ________ _______ near a coral reef in Australia.
have dived
My sisters _______ (not) ________ in a river.
haven't canoed
Michael and Paula ________ _________ a cave.
have explored
Have they seen the Eiffel Tower? Yes, they _________.
have
Have she gone to the USA? No, she __________.
hasn't
_______ you ________ a cliff before?
Have you climbed a cliff before?
You _________ (not) _________ across the desert.
haven't trekked
We ________ _________ under a waterfall.
have walked