单项选择题

The three children looked after their sick mother ______.

A．in return
B．by turn
C．in turn
D．on turn
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单项选择题
What is the main difference between the two parts of the city（）

A．The colour of the buildings
B．The age of the buildings
C．The colour of the roofs
D．The length of the streets
单项选择题
What do we know about Milly from the story（）

A．She was seriously ill.
B．She was hidden somewhere.
C．She had met with an accident.
D．She had caused a scandal. <br>
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