This is an apostrophe exercise I wrote for my sixth form student who appreciates my strange sense of humour. Please note that it may give small children nightmares.

You are looking for two types:
[1] possessive -‘s – something belongs
[2] it is, it has > it’s; something is > something’s]
[3]Beware: the possessive pronoun never has an apostrophe, so =its, hers, ours, yours, etc

1. Creepy Doll
Its been a long time since I saw its face grinning in the half-light.  The dolls severed leg lounges casually against the wall. At least I think its hers. It could belong to any of my sisters dolls which shes stuffed, fearfully into that cupboard. Its creepy, this doll. Shes lifeless but pretends to be alive, unblinking.

2. I like to use Apostrophes
I like to use apostrophes. The apostrophes something which I think looks great splattered across the page. Its nice with plurals and especially with the present tense, like runs, walks, jumps. Its curly shape thrills me, the tails end tickling the end of the word. Words just look better with apostrophes!

3. How to Eat Slugs
Theres nothing finer than a perfectly fresh slug. Its soft undersides will tantalise your tastebuds. The wrinkled flesh is a food-lovers delight, a brownish grey similar to – but far finer than – any overcooked mushrooms revolting taste.

ANSWERS
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Creepy Doll
It’s [it has] been a long time since I saw its [possessive pronoun] face grinning in the half-light.  The doll’s severed leg lounges casually against the wall. At least I think it‘s [it is] hers. It could belong to any of my sister’s dolls which she’s [she has] stuffed, fearfully into that cupboard. It’s [it is] creepy, this doll. She’s [she is] lifeless but pretends to be alive, unblinking.

I like to use Apostrophes
I like to use apostrophes. The apostrophe’s [apostrophe is] something which I think looks great splattered across the page. It’s [it is] nice with plurals and especially with the present tense, like runs, walks, jumps. Its  [possessive pronoun] curly shape thrills me, the tail’s end tickling the end of the word. Words just look better with apostrophes!

How to Eat Slugs
There’s [there is] nothing finer than a perfectly fresh slug. Its  [possessive pronoun] soft undersides will tantalise your tastebuds. The wrinkled flesh is a food-lover’s delight, a brownish grey similar to, but far finer than, – but far finer than – any overcooked mushroom’s revolting taste.