---I have _______that he will continue to rise to the challenges ahead.---Absolutely.
---- Sorry, I can't find the books you asked for.---- __________.
The reason _________ the little actress has been such a success is ________ she is both clever and hardworking.
I have no idea _______ we can do with these waste materials.
FBI stands _________ Federal Bureau of Investigation.
His work _________ have been completed; otherwise, he wouldn't be enjoying himself on the beach.