Answer:
D. Excretory and F. Cardiovascular
Explanation:
The two main systems that interacts with digestive system are excretory and cardiovascular system. The cardiovascular system which pumps blood to all parts of our body carries the nutrients absorbed from the digested food particles. They also control the speed of digestion using endocrine glands.
Excretory system checks the blood stream by filtering substances and eliminates unwanted compounds as urine. Water content of our body is maintained by kidneys.