You should make a shopping list first then you go shopping

you should make a shopping list first then you go shopping
-> before
2.the flood waters drained. we returned home
-> afier
3. many Vietnamese women wear coincal hats.they work in yhe field (when )
->
4. while listening to music I heard a strange noise
->while I
5.we called the forest guard unit.we saw a bush fire (as soon as)
->we