Question

The boys have been playing cricket since morning.

Into Since When​

Answer 1

Since when have the boys been playing cricket? This is the interrogative sentence.

What is an interrogative sentence?

• A sentence that asks a question and contains a question mark at the end of the sentence is called an interrogative sentence.
• It starts with interrogative pronouns such as do, has, shall, and will.
• Interrogative sentences also contain question tags such as isn't it? won't they? etc.