Chuyển các câu sau sang dạng bị động

Chuyển các câu sau sang dạng bị động
1.   Son plays the piano very well.
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2.   Many people learn Chinese nowadays.
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3.   They grow a lot of rice in tropical countries.
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4.   I took my younger sister to the park lát Sunday.
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5.   He can do this exercise quickly.
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6.   Nobody can do such a things.
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