1. I saw (see) Henry as I was cycling (cycle) to the sports centre.
2. While we were preparing (prepare) the picnic, it started (start) to rain.
3. All my friends were leaving (leave) the party when I arrived (arrive).
4. As we were walking (walk) by the river, we heard (hear) a shout.
5. We didn’t eat (not eat) very much while we were staying (stay) in that hotel.
6. I drank (drink) my dad’s coffee while he wasn’t looking (not look).