单项选择题


A．thinking
B．believing
C．worrying
D．wondering
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单项选择题
A．came intoB．went intoC．walked intoD．dropped into
A．came into
B．went into
C．walked into
D．dropped into
单项选择题
A．althoughB．butC．soD．yet
A．although
B．but
C．so
D．yet
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