There isn't anything for use to find the preposition. If you post the sentences that you want us to find them in, I will be glad to help.
Answer:
B
Explanation:
Samuel's is the correct way to show the possessive.
I would never have thought of D. It looks like it hints an a group of Samuels, but I'm not sure. It certainly is not possessive.
C: is incorrect. Uncle Samuel is possessive. It is not a simple plural in the given sentence. You need an apostrophe.
A is not correct. That, if it is at all correct, is a group possessive. The intent is one Samuel, and he possesses something. B is the only one that works.
B. Doesn’t have / are going to
Answer: In cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as byproducts. The three stages of aerobic cellular respiration are glycolysis (an anaerobic process), the Krebs cycle, and oxidative phosphorylation.
Explanation: