English file C1 9B Nouns: compound and possesive forms
Correct the mistake(s): She enjoys spending time with her grandchildrens'.
She enjoys spending time with her grandchildren.
Correct the mistake(s): Kate's and Steve's children are very well behaved.
Kate and Steve's children are very well behaved.
Correct the mistake(s): My friends brother lives in Vietnam.
My friend's brother lives in Vietnam.