We'll have to make up our minds by the end of the week. (be) -> A decision _{…………………………………………………………………} by the end of the week.

We'll have to make up our minds by the end of the week. (be)

-> A decision _{…………………………………………………………………} by the end of the week.

We'll have to make up our minds by the end of the week. (be) -> A decision ………………………………………………………………… by the end of the week.