We all like the teachers __________ class is interesting and

We all like the teachers __________ class is interesting and creative.

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--Mary was heard __________ just now. What happened?--John w

--Mary was heard __________ just now. What happened?--John was telling a joke.

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有2007盏亮着的灯,各有一个拉线开关控制着,拉一下拉线开关灯会灭掉,再拉一下灯由灭变亮,现按其顺序将灯编号为1,2,…

有2007盏亮着的灯,各有一个拉线开关控制着,拉一下拉线开关灯会灭掉,再拉一下灯由灭变亮,现按其顺序将灯编号为1,2,…,2007,然后将编号为2的倍数的灯线都

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平均月收入最高的行业与最低的行业月收入相差多少元?( )

平均月收入最高的行业与最低的行业月收入相差多少元?( )

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Lily is going to pay a visit to the Museum of Natural Histor

Lily is going to pay a visit to the Museum of Natural History. She wants to know

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