being able to read this makes me happy.
靴 (shoes)を磨いて (polish) 下さい (please)
How is this a "health" topic?
Showing the different uses of the verb. This one is not health related but brushing your teeth is.
Can't it use "wa" instead of "wo"?
It can't: "to polish" uses a direct object, which needs to be marked by the particle を.
Is te just attached to migaii?