Answer:
my favourite subjects are mathematics, science and history (no , after science)
she always wants to go shopping for trivial items. (no change)
Shirley, why do you always have to drive? (after the name)
Explanation:
I don't know if it's supposed to be done like this but in the first sentence you can't use comma after science because the following word is ,,and,, which connects the sentence and the last word.
