The national Education Department says school safety has set off alarm bells with frequent serious accidents_________students got injured or even killed.

―I wonder _______they are waiting.―At the bus stop.

It was too noisy outside. Not until ____at the top of my voice _____his head.

I’m expecting a pet dog for long，but mom has no time to buy _________ for me．

Do you have a partner to speak English _____? [ ]