Change the following sentences from passive to active voice.
The sink will be fixed by the plumber.
Artichokes are grown in California by farmers.
Pat has been asked by Jack to be his best man.
Cupcakes were bought by Sarah to celebrate her birthday.
The research study has been funded by the National Science Foundation.
The kite was being flown by the children.
The essay is going to be written by Theresa.
The package is being sent by Tommy.
The library was being built by the construction crew.