Run-on sentences

Front

We ate all the pizza, but we were still hungry.

Back

We ate all the pizza, but we were still hungry.

Front

My parents surprised us; they told us we were going to Disneyland.

Back

My parents surprised us; they told us we were going to Disneyland.

Front

We waited at the door; no one answered.

Back

We waited at the door, yet no one ever answered.