<span>The
Japanese adopted the Chinese system of writing, cooking, gardening,
drinking tea, and hairdressing. The Chinese civil service was introduced
but failed.</span>
Explanation:
1. At the moment, I am trying to figure out a math problem.
2. When I go home from school my mother is in her office doing work online.
Answer:
1) in
2) at
3) at and at
4) this?
5) at and or
6) at
i do not know if these are correct, you can double check lol
You should ask yourself: "Who are my readers?"