用while but 或 and 将句子合为一句
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2.i was doing my homework while my brother was watching tv
3.my father bought me a present and i like it very much
4,get there on time or you will mis the early bus
5,i have no idea about it but i can suppose that it must be about you
3.my father bought me a present and i like it very much
4,get there on time or you will mis the early bus
5,i have no idea about it but i can suppose that it must be about you
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