A guard will come and ask us what we are doing.

A guard came up and asked me what had happened.

The guard heard the sound and came on a run.

A short while later, a guard came and took him away.

But before he could lead the way, a guard came in.

What if it was a guard, coming to get him?

The door opened again and a different guard came in.

At that same moment the guard came to the door.

If only we could know for sure, but at that moment a guard came in and took away the television.

It wasn't long before the guard came to see us.