Misc: In 1582 Catholic countries switch to ---------- calendar cut 10 prior days. ?

Questions

More redheads are born in ---------- than in any other country: 11 percent of its population has red hair.?

The highest known score for a single word in competition Scrabble is ---------?

More than 20 percent of men and 10 percent of women say they've forgotten their ----------------- at least once.?

Fleas can accelerate ------------- times faster than the space shuttle.?

Half of all murders are committed with ------------?