The next morning, we trekked through (24)………. pristine jungle to the entrance of Son Doong and climbed down an almost vertical 80m drop into the darkness before swimming along a fast-followin
The next morning, we trekked through (24)………. pristine jungle to the entrance of Son Doong and climbed down an almost vertical 80m drop into the darkness before swimming along a fast-following river.
A. dense
B. heavy
C. concentrated
D. rich