—Lu does work hard. —Yeah. _____ of his time ______been spent on studies every day.
Every year, ______people go to visit the factory.
—_______ is this pencil? —It’s mine.
Is this ______ ruler? —No. _______ is over there.
Bill likes playing ______ basketball, but he doesn’t like playing ______ piano.
—Would you like to go swimming with me this afternoon?—______ , but I have a lot of homework to do.