What are two reasons Macbeth didn't want to kill the king

Macbeth says that he should not kill Duncan because they are related,  and because he (Duncan) is Macbeth's guest, and as host Macbeth should protect him.

i used to know but i learned it a long time ago sorry

explanation:

a) why did you buy only one bunch of bananas ? it's not enough for the party .

b) can i have a carton of juice, ? it looks very fresh !

c) a kilo of milk ? that's 2 pounds, .

d) i've got only one bar of chocolate . you can have a half of it .

e) cut just a small slice of cheese for me . i'm trying to lose weight .

f) do you want a bowl of soup ? it's delicious !

g) can i have a tin of biscuits, ?

h) do you want a loaf of bread ? i bought three .

i) let's buy a glass of wine to celebrate our wedding anniversary !

j) don't leave the jar of honey on the table . the kids will break it .

k) we need to buy some sweets and a bottle of coke .

l) would you like a cup of hot tea ? you've got a cold !

m) can i have a piece of chocolate cake, ? it's my favourite dessert .

n) i bought a beautiful packet of flowers for my mum's birthday .

hope this !