He was busy writing his essays.
他正忙着写论文。
He was busy writing a letter rather than reading a newspaper.
他正忙于写信而不是读报。
Between cooking, writing and running the farm he was kept very busy.
他又是做饭，又是写作，还要打理农场，忙得不可开交。
Between cooking, writing and running the farm he was kept very busy.
他又是做饭，又是写作，还要打理农场，忙得不可开交。
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