单项选择题


A．it
B．that
C．there
D．which
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单项选择题
A．desiredB．possibleC．availableD．feasible
A．desired
B．possible
C．available
D．feasible
单项选择题
A．employmentB．unemploymentC．developmentD．improvement
A．employment
B．unemployment
C．development
D．improvement
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