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at the station
What’s missing ?
train hill
house station
near
Read the words.
train hill
house station
near
第一关：
哪一个丢了？
train hill
house station
near
near
station
hill
train
house
第二关：
哪两个丢了？
near
station
hill
train
house
house station
train hill
near
第三关：