—You have written your book report _____ one hour. Have you finished it?—Not yet! But I think it is due _____ one hour.
Don’t be nervous , __________?
_______ fun I have playing computer games !
I’ve left my keys in the meeting room . Please fetch ________ for me .
. It’s very kind _________ you to give your seat to me .
Listen ! Peter is singing in the classroom . It _____ be him . He has gone back to hid hometown .