I believe that Lady Macbeth's words to her husband most often express her dissatisfaction with him. She believes he is not strong enough, she is emasculating, making her husband feel he's not a real man. She often says she wished she were born a man, so that she could do everything her weak husband isn't capable of doing.
Some things you could talk about in your letter are the hazards of litter and polythene. State the reasons why you believe actions should be taken and describe your concerns in your letter. Describe why this is bad for our environment and health. Convince them to see your point of view in the letter by coming from a place of concern, think about health concerns of others. I hope this helps.
The menu selections at school cafeterias
students'
This is because in, "We were impressed by several students' drawings," many students are owning many drawings.
student's will not work because this sentence does not say that only one student owns this one drawing.
students will not work because this is not possessive.