Question

What preposition will I use here :-

1 ) Since I will be busy _____ my homework and prepare for the exam tomorrow, I don't
think I will be able to go out tonight.
2 ) Since our school was next to our house, I used to come home _____ lunch time.

Answer 1

I believe these are the preposition words that can be fit into the sentences

1.) on

2.) for

Answer 2

Step-by-step explanation:

doing

for

...............