The apostrophe 4

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In the box below each sentence, edit the sentence to correct any errors in the use of the apostrophe. If a sentence is correct, write “correct” in the box.

For help with this exercise, see Quick help: Apostrophes.

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Question 1 of 5

The summer training program teaches its students the value of a good days’ work.

Revision: The summer training program teaches its students the value of a good day’s work.

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Question 2 of 5

The grand prize was five hundred dollars worth of gasoline.

Revision: The grand prize was five hundred dollars’ worth of gasoline.

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Question 3 of 5

We were not aware that you are a friend of her’s.

Revision: We were not aware that you are a friend of hers.

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Question 4 of 5

Cameron signed up for a skydiving course despite his mothers strong objections.

Revision: Cameron signed up for a skydiving course despite his mother’s strong objections.

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Question 5 of 5

A bird instinctively knows when it’s time to leave its nest.

Correct as written.