---Guys, I was really worn out! I cant walk any further!
--- We should have a rest. We ______ the cave a whole day.
A.exploring | B.are exploring |
C. have been exploring | D.explore |
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---Guys, I was really worn out! I cant walk any further!
--- We should have a rest. We ______ the cave a whole day.
A.exploring | B.are exploring |
C. have been exploring | D.explore |