Someone is at the door, who is ?
All the preparations for the task _________, and we’re ready to start.
_________as one of the most important inventions of the time, the computer helps people living in different countries to do a lot of things.
Anyone _______ wants to learn something can sign up for the online courses.
Tell Mary there is someone __________ for her at the door.
I like _______ color of your handbag. It is ______ good match for your dress.