music: what group made the 1982 smash hit "i love rock 'n roll"??

Questions

Czar Paul I banished soldiers to ---------- for marching out of step.?

During the ---------- period, about 500 million years ago, a day was only 20.6 hours long.?

During the Cambrian period, about ---------- years ago, a day was only 20.6 hours long.?

During the Cambrian period, about 500 million years ago, a day was only ---------- hours long.?

During the---------- , banks first used Scotch tape to mend torn currency.?