Preposition OR Conjunction?

Make sure to have your drafts done before you come to class Friday.

Everyone except my brother made it to Thanksgiving dinner this year.

Blake puts half his earning in the bank when he gets his paycheck.

At the end of the day, all that matters is whether you can go to bed with a clean conscience.

The student slipped out the door early without anyone noticing.

I didn't set my alarm clock right, so I woke up late this morning.

We'll keep studying grammar until everyone feels confident with the basic parts of speech.

This weekend my sister and I are making cookies and cupcakes!

For supper last night, we had BLTs and five-bean salad.

Because we saved all year, we could afford to buy gifts for our family.

Nick usually does his homework as soon as he gets home, but last night practice went late.

When I woke up this morning, my dog was sprawled across the bed.

At the meeting this morning, I sat between Liz and Raeann.

Winter was tough on us last year, but this year is supposed to be more mild.

For Christmas, we're going to South Dakota and Iowato visit our families.

I'm looking forward to going to the game with my friends after work.