Giúp mik với ạ! ----- Nội dung dịch tự động từ ảnh ----- C. Use Modals: Must Have to - Ought to to insert the sentence and adjust the meaning: 1. He forgot to plug the television into the socket. 2. These scissors are rather dull. 3. For your safety, you keep your seat belt tight. 4. You watch on TV from the safety of the armchair. 5. I'll get the scissors sharpened.