B. Directions: Write I on the blank if the clause is independent, or it can stand alone. Write D if the clause is dependent, or it still needs other words to complete the thought it expresses.
1. to whom I addressed the letter
2. that is the key of my drawer
3. when the ice skater impressed the audience
4. the inventor showed what a genius he was.
5. you will be called if you fail to attend the seminar.