Contractions
Possession
Possession continued
Plural letters & words used as words
100

The pen didnt write.

didn't 

100

Emilys hair is beautiful. 

Emily's

100

Maxs friends like to play video games. 

Max's friends like to play video games. 

100

The tourists were relieved to find ATMs throughout Europe. 

The tourists were relieved to find ATM's throughout Europe. 

The tourists were relieved to find ATMs throughout Europe. 

200

Wont you change your mind?

Won't

200

The Johnson's yard is full of Christmas decorations.

The Johnsons' yard is full of Christmas decorations. 

The Johnsons' yard is full of Christmas decorations. 

200
Ethans dream might soon be a reality. 

Ethan's dream might soon be a reality. 

200

Rachel's favorite jeans are Levi's 501s.

Rachel's favorite jeans are Levi's 501's. 

Rachel's favorite jeans are Levi's 501s. 

300

I havent seen my left shoe in weeks. 

haven't 

300

All of the teacher's classrooms were colorful.

All of the teachers' classrooms were colorful. 

All of the teachers' classrooms were colorful. 

300

Where should the apostrophe go in this sentence?

In three weeks time, James and Laura will be parents. 

In three weeks' time, James and Laura will be parents. 

300

Everyone knows that the '80s was a terrible time for fashion.

Everyone knows that the 80's was a terrible time for fashion. 

Everyone knows that the '80s was a terrible time for fashion. 

400

Which sentence requires an apostrophe?

Its just a matter of time until we find it.

I am quite fond of its bright shoelaces. 

It's just a matter of time until we find it. 

400

My mothers job was in the childrens department. (two apostrophes needed)

My mother's job was in the children's department. 

400

The ladies' eyelashes were so long, they looked like they might fly away. 

The ladie's eyelashes were so long, they looked like they might fly away.

The ladys' eyelashes were so long, they looked like they might fly away. 

The ladies' eyelashes were so long, they looked like they might fly away. 

400

Rick realized that he had used six however's in his opening paragraph. 

Rick realized that he had used six howevers in his opening paragraph. 

Rick realized that he had used six however's in his opening paragraph. 

500

Which sentence is missing an apostrophe?

Whos good at math?

Whose dog is this? 

Who's good at math? 

500

Jane and Becky's dog is lost.

Jane's and Becky's dog is lost. 

Jane and Becky's dog is lost. 
500

Were should the apostrophes in this sentence go?

Little girls clothing is on the first floor, and the mens department is on the second.

Little girls' clothing is on the first floor, and the men's department is on the second. 

500

We are all hoping for A's in the class.

We are all hoping for As in the class. 

Either one is correct.  Check your style guide for specifics.  It is more traditional to include the apostrophe here and our textbook says it is appropriate to use it.