1,Having walked in the desert for several days ,we finally r

1,Having walked in the desert for several days ,we finally reached what was called oasis,_C___.
A exhausting B being exhausted C exhausted D exhaust
2.he is supposed___C___an hour ago ,but he hasn't turned up by now.
A to arrive B to arriving C to have arrived D to having arrived
3._A____you _______him around the museum yet?
yes,We had a great time there.
A Have shown B Do show C Had shown D Did show