It remains______ whether the medicine has side effect.
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.
With tags(标签) _____ to the luggage, it won’t take long for the passengers to find theirs correctly..
Mr. White graduated from _____ Cambridge University with a degree in ____ physics.
Mr. Black is very happy because the clothes made in his factory have never been .