SC - L7 possessive case

My mom has a new laptop.

• My moms' laptop is new.

• My mom's laptop is new.

• My mom laptop is new.

Sam has a big smartphone.

• Sam's smartphone is big.

• Sam' smartphone is big.

• Sam's smartphone is small.

The children have a small MP4 player.

• The children's MP4 player is big.

• The childrens' MP4 player is small.

• The children's MP4 player is small.

My grandpa has awesome CDs.

• My grandpa's CDs are terrible.

• My grandpa's CDs are awesome.

• My grandpas' CDs are awesome.

The man has cheap headphones.

• The man's headphones are expensive.

• The men's headphones are cheap.

• The man's headphones are cheap.

Louis has a great laptop.

• Louis' laptop is great.

• Louis's laptop is great.

• Louis' laptop is terrible.

My son has a nice camera.

• My son's camera is nice.

• My sons' camera is nice.

• My son camera is nice.

My __________ birthday is next week.

• brother's

• brothers'

My _________ room is always a mess.

• sister's

• sisters'

This is _____ new car.

• Jack

• Jacks

• Jack's