Use the right tense
1.She saw that the prairies (stretched/had stretched) for miles
2.Susie (looked/had looked) through the letters before her elder sister got them
3. When Jane came into the sitting room.Adele (was playing/played) the piano
4. Sam read the book and then (did/had done) his homework
5. The weather forecast (say) it (rain) today but look. the sun (shine)