Join the parts of the sentences with when or while and the correct FORM OF THE PAST TENSE .
1 We / just go out ...// it/ begin to snow ( when )
2 ... she / swim in the sea // she / lose one of her beach shoes . ( while )
3 I / do my homework ... // all the lights / go out . ( when )
4 ... they / have dinner // the cat / eat the goldfish ( while )
5 My brother / cycle quite fast ...// he got a puncture. ( when )
6 ... I / change some money //a robber / run into the bank .( while)