D+
Jim Holland

The answer to each clue is a familiar phrase with the letter D added to one of the words.

1. Rock group at a Bikini event
2. Captives held by Beaver Cleaver's father
3. Cause of a sailboat race delay
4. Get a C or better on a Shakespeare test

Answers:

1. Nuclear test band
2. Prisoner of Ward
3. No wind situation
4. Pass the Bard exam