Family Ties...

As seen on today's midterm high school English tests in Japan...

Your brother's wife is your....(aunt)
Your brother's wife is your...(sister)
Your brother's wife is your... (uncle)
Your mom's mom is your... (uncle)
Your brother's wife is your...(uncle)
Your brother's wife is your...(Brother in law)
Your older sister's son is your... (uncle)
Your older sister's son is your....(sister)
Your aunt's daughter is your...(wife)
Your aunt's daughter is your....(mother)
Your brother's wife is your...(sister-wife)
And finally...
Your older sister's son is your...(son)