Make questions with the underlined words.- 1.They havent packed their backpacks

1. They havent packed their backpacks yet, because they were very tired.- Why havent they packed their backpacks yet?
2. He has just met his friend.- Who has he just met?
3. The children have cleaned the forest.- What have the children cleaned?
4. The boys have already put up all the tents.- What have the boys already put up?
5. They have built a hew house.- What have they built?
6. Misha has applied for a visa.- What has Misha applied for?
7. The girls have picked up a lot of flowers.- What have the girls picked up?