the spelling of a word changed/has changed

[giddyman]

Please choose the correct verb form in the parentheses.
My answers are (changed) and (has stayed). Am I right? Thank you.

Both spelling and pronunciation change. In general, the spelling of words changes more slowly than their pronunciation. As a result, the oral and written forms of some words are quite different from each other. The word “knock” has a silent K. Today, people do not pronounce the K in this word but years ago they did. While the spelling of this word did not change, the pronunciation did. The words “meat” and “meet” are spelled differently but they are pronounced the same. In the past, they were pronounced differently, too. In a few cases, the spelling of a word (has changed / changed) while its pronunciation (has stayed / stayed) the same.

source: An English study book published in South Korea
ISBN: 89-85456-93-8

 

[GoesStation]

No. Would you like to try again?

 

[giddyman]

No. Would you like to try again?

Then, (has changed) and (stayed)?

 

[jutfrank]

No. Try again.

Perhaps you might explain your reasoning, too.

 

[giddyman]

No. Try again.

Perhaps you might explain your reasoning, too.

If I had known the answer, I would not have posted. Please help.

 

[giddyman]

changed, stayed

I can't think of any other.

 

[jutfrank]

The best answers are has changed and has stayed, since the sentence is an observation about the present situation, as is the wider text.

Those are the answers that the writer of the exercise wants you to give.