PLEASE ANSWER MY QUESTION PLEASE I NEED IT URGENT

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.

What is the meaning of the word checking as it is used in this sentence from the second paragraph of the passage?

Which sentence best contrasts two things? a. air travel, like bus travel, is a fun way to get from one place to another. b. air travel is a fun and relatively easy way to get from place to place. c. both bus travel and air travel require substantial planning. d. air travel is much more expensive than bus travel.