Which conjunction makes sense?

We didn't have school ________ Monday was a holiday.

• or

• because

Mark ate pizza _____ Greg ate a burger.

• until

• , but

I was late to school ____ I went to the office first.

• because

• , so

The car ran out of gas ____ it rolled to a stop.

• until

• , so

The bee landed on my arm ____ I screamed.

• if

• , so

There's no more pizza _____ Mr. Wagner ate it all.

• because

• , so

My glasses are dirty ____ I will clean them.

• if

• , so

You may not pass ____ you don't try your best.

• , so

• if

How do you spell because?

We go home _____ 8th period.

• after

• until