Multiple ChoiceExercise 21 of 77

Asa Sherpa has (0) CLIMBED Mount Everest more times than (1) .......... else in the world. Last year, he broke the world record by climbing the world's highest mountain for the twenty-first time. (2) .........., he says he won't be able to do it again, because the mountain is becoming too dangerous to climb. Asa…