What’s the central idea of the passage，Bob—Sorry，I can’t make________of itIt’s beyondmy ability

Parts of the cave have been badly affected by rain andto the air.

Doctor, is there_____with my legs ____________.

My father has a habit of jogging _____ the Jinchuan River for an hour in the morning.

I had hoped to get to the meeting, but I found at the last minute that I couldn’t ________ it.