An early typewriter produced letters quickly and neatly; the typist, _____ couldn't see his work on his machine.
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.
You’d better not phone me between two and six o’clock this afternoon; I ___ a speech then.