The Education Department says that school safety has set off alarm bells with frequent reports of serious accidents ________ students got injured or killed.

The company is famous ______ selling lots of cheap books over the web

How do you find the match between Spain and Switzerland?—It’s ！ Powerful Spain lost the game by 0∶1.

What’s the model plane look like— The wings of the plane are _____ of its body

_My parents always tellme_______others late at night._They are right. It’s not polite.