18) I was running for the bus when I fell. I was wondering where you were ! We were sleeping when the burglary happened. I was traveling when I got the news.
19) 1. Mr White wrote a letter to his son and went to bed. 2. The last time I saw Sharon she lived in London. 3. He pressed the bell and waited for a few seconds before someone opened the door. 4. Billy wasn’t going to the pub when I saw him. He went to the railway station.
