New Living Translation
As they were untying it, some bystanders demanded, “What are you doing, untying that colt?”

American Standard Version
And certain of them that stood there said unto them, What do ye, loosing the colt?

Berean Study Bible
and some who were standing there asked, “Why are you untying the colt?”

Douay-Rheims Bible
And some of them that stood there, said to them: What do you loosing the colt?

English Revised Version
And certain of them that stood there said unto them, What do ye, loosing the colt?

King James Bible
And certain of them that stood there said unto them, What do ye, loosing the colt?

World English Bible
Some of those who stood there asked them, "What are you doing, untying the young donkey?"

Young's Literal Translation
and certain of those standing there said to them, 'What do ye -- loosing the colt?'

Mark 11:5 Additional Translations ...