1. 谁 (shéi/shuí) - Who → Someone/Anyone

• Question: 他是谁**？ (Who is he?)

• Statement: 房间里好像有谁在说话。 (It seems someone is talking in the room.)

• Statement (Negative): 我谁也不认识。 (I don't know anyone.)

2. 什么 (shénme) - What → Something/Anything

• Question: 你想吃什么？ (What do you want to eat?)

• Statement: 我想喝点什么。 (I want to drink something.)

• Statement (Negative): 我什么也不想吃。 (I don't want to eat anything.)

3. 哪里/哪儿 (nǎli/nǎr) - Where → Somewhere/Anywhere

• Question: 你要去哪里**？ (Where are you going?)

• Statement: 这个周末我们去哪里**玩吧。 (Let's go somewhere fun this weekend.)

• Statement (Negative): 我哪儿也不去。 (I'm not going anywhere.)

4. 怎么 (zěnme) - How → Somehow

• Question: 这个词怎么读？ (How do you read this word?)

• Statement: 我们得想办法怎么解决这个问题。 (We have to think of some way how to solve this problem.)

5. 多少 (duōshao) - How Much/Many → Some amount

• Question: 这本书多少钱？ (How much is this book?)

• Statement: 请给我多少留一点。 (Please leave me some.)

Summary: When a question word is not at the end of the sentence and the sentence is not a question, it is likely functioning as an indefinite pronoun.