So I was asked to rewrite the following sentence with the correct tense of the verb given in bracket: It is I who (be) to do it. Initially I believed, the following would be correct: It is I who has to do it. But after researching for a while I think I am wrong and the has verb needs to be replaced with am. Any suggestions?
"Is" could be the right form. There are plenty of examples here.
- And it is I who is to restore the fruits of my labor to the entire world.
However, this usage is reckoned with as a common mistake (The Most Common Mistakes in the English Language), and you should really use "am".
- It is I who am to do it.