It is required by law that the children above six years old in our country ________ to school to receive education.

The chief editor demanded that the article _________ immediately.

       fired, your health care and other benefits would not be immediately cut off.

If I ____ you, I would join the army.

If I _______ that program the day before yesterday, my computer wouldn’t have broken down.

She had to work deep into the night, ______she couldn't have spread the messages to all the relevant people successfully.

There was a lot of fun at yesterday's party. You ________ come，and what a pity!

The professor ________at 8 o’clock，but he has not shown up yet，which worries all of us.

My English teacher insisted that the exercises ____very difficult and that we ____them carefully.