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(     )1. A. Robots can do some dangerous work but humans can't. 
           B. Robots can take the place of humans to do some dangerous work.
           C. Robots ask humans to do some dangerous work.
(     )2. A. Robots don't need food.
           B. Robots don't need to work for humans. 
           C. Humans needn't pay robots for their work.
(     )3. A. It's time to have dinner.
           B. It's time to cook dinner. 
           C. We are having dinner.
(     )4. A. It's useful to find a job on the Internet.
           B. We can use the Internet to find a job.
           C. We can work for the Internet.
(     )5. A. I want to know if it will rain or not.
           B. I don't believe it will rain.
           C. I think it will rain.

(     )1. A. The house is empty.
           B. The box is empty. 
           C. There's only a box in the house.  
(     )2. A. She can remember my name. 
           B. She can't remember my name. 
           C. She can't forget my name.  
(     )3. A. What color is your pen? 
           B. How many pens do you have? 
           C. How much is the pen?  
(     )4. A. It's not hard for me to do the job. 
           B. To do the job alone is easy.
           C. It's difficult to do the job alone.  
(     )5. A. Betty will become a teacher.  
           B. Betty's mother doesn't like the teacher. 
           C. Betty looks like her mother.

(     )1. A. My father is busy every day.
           B. My father is busy on Sunday.
           C. My father is free every day.
           D. My father is free on Sunday.

(     )2. A. The movie theater is beside the school.
           B. The movie theater is in the school.
           C. The movie theater is far from the school. 
           D. Let's buy some tickets in the movie theater near the school.

(     )3.  A. Jimmy does well in English. 
            B. Jimmy studies English hard.
            C. Jimmy is good at English.
            D. Jimmy's favorite subject is English.

(     )4. A. The history class started at 8:13.
           B. The history class began at half past eight.
           C. The English class began at 8:30.
           D. The Chinese class started at 8:30.

(     )5. A. It took him thirty minutes to buy this pair of glasses.
           B. He paid thirty yuan for the gloves.
           C. This pair of glasses cost him thirty yuan.
           D. He wanted to buy this pair of glasses, but he had noly thirty yuan.