energy, we turn off the lights for Earth Hour on the last Saturday in MarchA. SavingB. To

发布时间：2020-08-17 08:01:48

    energy, we turn off the lights for Earth Hour on the last Saturday in March
A. Saving
B. To save
C. Saved
D. Having saved

网友回答

A. Saving
(答案→)B. To save
C. Saved
D. Having saved
解析：考查非谓语动词。题意：为节约能源，我们每年三月最后一个星期六关灯一小时。目的状语由不定式充当。故B项正确。
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