A thief slipped into the room without ______.
41. _____ you have the chance to go to university in the future, you must take it.
42. --- We really enjoyed ourselves at the party. Thanks again, Mr. and Mrs. Smith. --- ________. Just drop in whenever you feel like it.
43. “All ______ present, and all ______ going on smoothly.” Said the secretary.
44. He must be getting thin, for his trousers _____ badly like a flag in the wind.
45. When I met him the other day, it was the first time we _____ each other since we were at school.