These mistakes are very___________ among students, so we’re not surprised if you also make such mistakes.
He has read the book as many as, if _____ than, five times.
This church is as old as, if _____ than, that one.
Her pronunciation is as good as, if ____than, her teacher's.
In that month, he earned as much as, if ____ than, $40 000.
The research is so designed that once _____ nothing can be done to change it.