按要求完成下列各题。
1. Sarah is 160 cm. (就画线部分提问)
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2. Wu Yifan is taller than John. (就画线部分提问)
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3. I like the yellow monkey. (变为一般疑问句)
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4. I think the yellow monkey is 150 cm tall. (变为否定句)
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5. Is his head smaller? (作肯定回答)
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6. His brother is 50 kg. (就画线部分提问)
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7. I am 160 cm. She is 158 cm. (变成一句话)
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8. He can catch the ball. (变为一般疑问句)
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