music: 60's Chart Toppers: Name The Artist: School Is Out?

Questions

Approximately ---------- of software in China is pirated.?

At any given time, there are ---------- thunderstorms in progress over the earth's atmosphere.?

At room temperature, the average air molecule travels at the speed of a ---------- bullet.?

Bacteria, the tiniest free-living cells, are so small that a single drop of liquid contains as many as ---------- of them.?

---------- (the world's tallest grass) can grow up to 90 cm in a day.?