Their efforts to improve the production have been very _________,and they have been praised by theA.effectiveB.efficientC.effectD.affective答案是那个

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Their efforts to improve the production have been very _________,and they have been praised by theA.effectiveB.efficientC.effectD.affective答案是那个
Their efforts to improve the production have been very _________,and they have been praised by the
A.effective
B.efficient
C.effect
D.affective答案是那个

Their efforts to improve the production have been very _________,and they have been praised by theA.effectiveB.efficientC.effectD.affective答案是那个
a.effective