Here are the correct answers for each question:

37. **D) had / called**
The correct sentence would be: "I had my interview with the vice-president when my daughter called me."

38. **D) had been / retired**
The correct sentence would be: "Ronald Reagan had been president for 8 years before he retired."

39. **C) was raining / had been raining**
The correct sentence would be: "I went out of the house. It was raining. It had been raining for two weeks."