Jawaban:

1. All human behaviours have been shaped by experiences.(passive)
2. A customer is served by waiters and waitresses.(passive)
3. Someone are going to explain the lessons.(active)
4. These scholarships are being offered by The National Gallery of Australia. (passive)
5. Many valuable artefacts have been hidden by the museum staff. (passive)
6. In 1903, the novel was published by him. (passive)
7. Kayla could finish the task soon. (active)
8. In Iowa, rice are going to be grown by us. (passive)
9. A model has been influenced by a particular set  of circumstances.(passive)
10. The message has been had by us.(passive)

Penjelasan:

untuk penjelasan saya tidak bisa terlalu detil karena materinya sangat banyak, untuk mencari passive dan active pertama kita harus cari kata kata yang mengindikasikan perbuatan contohnya:

have had (active)

have been had (passive)

have disini bisa berubah terganntung dengan subjek, jika subjek lebih dari satu maka have digunakan, dan has pada satu subjek.

lalu,

published (active)

was published ( passive)

was untuk I,She, He, It

were untuk you, they, we, dan "plural"

lalu jika kamu menemui kata dengan verb satu, maka kata itu active

infinitive(-ing) harus diteliti dengan baik baik karena susunannya agak ribet.