Complete exercise 1 by adding -ing to the verbs and classifying them into the correct categories.

For this exercise, add -ing to the verbs: stop -> stopping, sleep -> sleeping, die -> dying, run -> running, visit -> visiting, dance -> dancing, swim -> swimming, chop -> chopping, write -> writing, laugh -> laughing, study -> studying, play -> playing. Then classify them: Single consonant -> stopping, running, visiting, swimming, chopping; Double consonant -> stopping, chopping, running; -e -> dying, writing; -y -> studying; Others -> sleeping, dancing, laughing, playing.