поставьте запятую после вводного предложения, где это необходимо

-Whenever I hear someone suggest that love is the answer to our problems I wonder
why love has usually made me miserable.
- Feeling as I do I have no alternative.
- Bored and disgusted with the ballgame I thought bitterly that there were some
peanut vendors in the stands who were better athlets than anyone on the field.
- Frequentiy we worry about mistakes we never made.
- Considering my shortcomings I have been luckier than I deserve.
- Later we may need to discuss some exceptions to the rule.
- If your essay falls apart it probably has no primary idea to hold it together.
- After a long introductory clause or phrase use a comma.