Draw the ________(animal) and ________(child) faces on the paper.

Draw the ________(animal) and ________(child) faces on the paper.

animals' 和 children's
翻译：在纸上画出动物的脸和孩子的脸.
说明：句子想表达的意思应该是复数,并且是所有格.

animal's, child's
animals', children's