Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to teach a learner of english correct word stress [title] Listen carefully to recognize the error. [step] This kind of error will sound like this: instead of saying behind, he will say behind, or even be-hind. [title] Let him know that this is an error in a kind way.

Ending1: [step] Saying this is not an easy way to stop a student from doing it, and it is potentially very embarrassing for him too. Someone who knows how to solve difficult math problems really will not be nearly as embarrassed. Ending2: [step] There are a number of other mistakes which seem to be crucial to learning english vocabulary. These mistakes are important in education and psychology. Ending3: [step] He may think he's ok since he says all the right sounds, but the word stress is wrong. [title] Show him how this is indicated in a dictionary. Ending4: [step] Verbal missteps, misspelling, language difficulties, grammar mistakes will lead to this poor example. [title] Identify whether the child is at risk of developing problems.

Answer format: ending1/ending2/ending3/ending4