identify the problem in each of the following sentence;run-on;fragment, dangling participle, or lack of parallel construction

Which sentence contains a gerund? sally is fishing on the lake with her father and brothers.marcus is supposed to be joining the discussion later today.my cat was not interested in the dangling string.her chorus director does not appreciate angela's fidgeting.

And that's poem by ruskin bond what does the use of the word heartbeat suggest about the narrator's attitude towards life

What word or words suggest they have a monotonous marriage? in the lamb to the slaughter