What is used to end a indirect question?

Indirect questions are embedded within a larger sentence, so they don't end with a question mark. They are typically introduced by words like:

* Whether: "She asked whether I was coming to the party."

* If: "I wonder if it will rain tomorrow."

* What: "I don't know what time the train leaves."

* Who: "Can you tell me who wrote this book?"

* When: "Can you remind me when the meeting is?"

* Why: "Could you explain why you did that?"

* How: "I'm not sure how to get there."

The verb in an indirect question is usually in the infinitive form (e.g., "to know," "to go," "to see").

Example:

* Direct question: "Are you coming to the party?"

* Indirect question: "She asked if I was coming to the party."