true, heat engines use heat to power themselves to do work.
hope this helps
Answer: (Choice B): We look forward to celebrating with you.
Explanation: The tone of a text is the attitude of the writer towards an audience. It differs according to the words the writer decides to use. This text is an invitation to Mr. and Mrs. Kaufman's daughter's wedding. Therefore, it is written in a rather formal tone. The (Choice B): "We look forward to celebrating with you.", maintains the same formality, and never loses the cordial tone.
The reader should observe and analyze the authors perception of the words and the " tone " set in the story.
Haha funny question but if im answering correctly it is because its not proper grammar in the english language. Who knows? Haha, have a good one :)
