We're going to have a look at what happens when we add -ed, -er, -est and -ing to root words ending in 'y' with a consonant before it.

Here we have an example:

If we add -ed to the word copy it becomes copied. The y is changed to 'i' before ed, er and est.

But what happens when we add -ing?

The word copy becomes copying. We do not change the 'y' to 'i' because this would result in iing! There are two exceptions to this rule: skiing and taxiing.

Are you ready to start the activities? Let's go!  

Choose the correct word to complete the sentence: 

He was busy ______ his friend's notebook. (copying, copier, copiest, copied)

The correct word to complete this sentence is copying