I’m very ________ about expressing my opinions in public in case I may make mistakes.

--- Do you think it _____ to argue with them?  --- The question is not worthy _____.

The reference she made to her friend, the poet, was interesting but too _____ for anyone to appreciate.

The professor was so ______, hardly anyone came to class. 

If you tend to regularly suffer from a certain symptom like headache, be sure to keep in store the       medicine to take care of the issue as soon as it starts.