—Do you think the thief entered through the window?—No, if he had, I don’t believe, _______ broken the living-room’s window.
I could hardly tell the twins apart because their appearances are only ____ different.
He is the lawyer who you took photos ____ you were in the Forbidden City.
This picture was taken when my father was a child and even I myself couldn’t _____.
While ____ in tea with that dealer, Mr. Smith had himself ____.
Mary _____ be in London because I saw her in town just now.