—Jim,have you finished reading Harry Potter and Half-Blood Prince??

—No.I______ my father on the farm all day yesterday.

A.would help                       B.had helped

C.was helping                     D.have been helping

-- Jim! Have you seen my favorite watch? I can’t find it.

-- Watch? I saw Lucy going away with ______, but I’m not sure whether it’s yours.

A. that　　　 　　　　 　　　 B. it　　　 　　　　 　　　 C. one　　　 　　　　　　 D. this

—Jim,have you finished reading Harry Potter and Half-Blood Prince?

—No.I______ my father on the farm all day yesterday.

1. A.
   would help
2. B.
   had helped
3. C.
   was helping
4. D.
   have been helping

Have you ever seen a movie in which a building was burnt down or a bridge was destroyed? Have you seen films in which a train crashed or a ship __21_ into the ocean? If so, you may have wondered how these things could happen without __22_the people in the film.
The man who knows the __23__ is the “special-effects” man. He has one of the most important jobs in the film __24__. He may be __25__ to create a flood or to make a battlefield explode. But he may also be told to create a __26_ effect which is much less exciting, though just as important to the success of the film. In a __27__ for one movie there was a big glass bowl __28__with water in which small fish __29__ swimming. The director of the movie__30__ the fish to stop swimming suddenly __31_ they seemed to stare at(盯着) an actor. Then the director wanted the fish to stop staring and swim away. But fish suddenly __32__ be ordered to do anything. It was quite a __33_.
The special-effects man __34_ about this problem for a long time. The result was an idea for __35_ the fish with a harmless use of electricity. __36__he applied electricity to the fish bowl causing the fish to be totally still(静止的). Then he rapidly reduced the __37__ of electricity allowing the fish to be free.  __38_ he got the humorous effect the director wanted.
__39_in other parts of movie making there are those who have developed __40__ skill in creating certain kinds of effects. Jim White, who has been a special-effects man for thirty-two years, is best known for work with ships and airplanes.