Level: intermediate
When two or more people do the same thing, we can use the possessive forms of the reciprocal pronouns each other’s and one another’s:
They helped to look after each other’s children.
Average
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Hello Sophy,
Did you press the Show Answers button (which appears after you press Finish) to see the difference between your answer and the system's answer? If you still don't understand what's wrong after that, please tell us what you think the correct answer is.
All the best,
Kirk
The LearnEnglish Team
Hello Tomoaki Hachiya,
You are correct. The pronunciation of these forms is identical and so only the context tells us if the speaker is referring to one or to more than one teacher.
Best wishes,
Peter
The LearnEnglish Team
Hi Kunthea,
All the sentences are correct! But they mean different things.
Does that make sense?
Jonathan
The LearnEnglish Team