Mechanics repair cars, trucks, and motorcycles.
They use tools to fix things.
Mechanics work at auto repair shops.
Many high schools and adult education schools offer auto repair classes.
Singers sing songs.
This singer is holding a microphone.
Singers need to have a good voice.
Welders weld metal.
They wear safety helmets, gloves, and sturdy shoes for protection.
Welders need to be very careful and follow strict safety rules.