Ⅱ.选词填空 1.It is known to all that an active volcano can erupt _at any time. 2.The government has declared a state of emergency following theearthquake. 3.So,do we dance in order to make ourselves feelbetter. calmer_,healthier?(2018·全国卷Ⅲ) 4.You can plant a tree,make a meal with locally grown vegetables,orsave _ power_—the possibilities are endless.(2019·北京卷) 5.Caffeine,a chemical typically found in coffee,has caused a lot ofconcern because it is one of the few drugs that show up regularly inour food supply_ (2018-浙江卷)