What is the primary function of subject pronouns in a sentence?

Which pronoun would correctly fill the blank: '___ hit the ball'?

In the sentence 'The basketball hit ___', which pronoun is appropriate?

Choose the correct object pronoun for this sentence: 'Jessica passed the book to ___.'

What should follow a preposition in terms of pronoun type?

Identify the error in the sentence: 'Between she and I, the secret was safe.'

In the sentence 'The gift from us amazed them', what is the role of 'us'?

Which pronoun is incorrectly used in the sentence: 'Everyone except Judy and I applauded.'

Select the correct pronoun to complete the sentence: 'The message is for ___ and me.'

What is the correct object pronoun to use in the sentence: 'The teacher spoke to ___.'