单项选择题

A．Trains go into the sky.
B．Trains go under the ground.
C．Trains go through mountains.
D．Trains go under the water.
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单项选择题
A．It is in Mexico.B．It is 244 meters high.C．It is the pyramid of Khufu.D．It is in Sahara.
A．It is in Mexico.
B．It is 244 meters high.
C．It is the pyramid of Khufu.
D．It is in Sahara.
填空题
wandering
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