Answer: do and return (many answers)
Explanation: Makes it a complete sentence.
The change in temperature is greater when the water is heated with the use of the fire caught by the food substance, then the energy content in the food substance is higher because the heat energy is greater, since the heat energy is absorbed by the water when the fire is kept under the test tube containing water. The formula indicates that if the change in temperature is greater when the mass of the substances and the volume of water are constant, then the heat energy is higher.
When Lady Macbeth dies, he feels nothing, he is emotionless. That might tell us that she has turned him into a ruthless killer, who will stop at nothing to get what he wants, and what he wants is the kingdom. He is very calm, as if he doesn't care at all that his wife died - she has turned him into a mad monster. He has lost all ability to feel, at least until he finishes what he has started.