The doctor told him that ____ was necessary to take the medicine on time.

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The doctor told him that ____ was necessary to take the medicine on time.        [     ]
A. that
B. it
C. this
D. what

答案

举一反三

He found            very difficult            the math problem.        [     ]
A. that, to solve
B. this solving
C. it, to solve

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       not polite to make fun of people who are in trouble.        [     ]
A. That"s
B. It"s
C. There"s

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根据所给的汉语提示，转换下列句型1. You"re a student. I"m a student, too. (合并成一句)
     __   _ you ____  I are students.
2. American fast food seems to be the most popular in the world. (改为同义句)
       ___   __ _   that American fast food is the most popular in the world.
3. After he said these words, he went out of the room. (改为同义句)
       _ __ these__   _, he went out of the room.
4. Something is wrong with him. (改为否定句)
      __ _ is ___    wrong with him.
5. You"d better finish your homework today. (改为否定句)
    You"d____     ___ your homework today.

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I found        __not easy to learn English well.       [     ]
A. that
B. this
C. it

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I think important to learn English well.
A. this
B. that
C. it
D. you are

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