Transform these assertive sentences into interrogative
sentence
1. This is his book.
2. The head boy will be in charge of this duty.
3. He is a chartered accountant.
4. She can run fast.
5. We should inform them.
6. He has submitted his notebook.
7. We all want to play different sports.
8. The watchman opened the gate.
9. We should stop the car.
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