两个高中英语问题急求!!
____thatwitnessedtheemergenceofandtheongoingdebateovergeneticallymodifiedfood.
为什么要填“itwasthefirsttenyearsofthe21stcentury”?
themostimportantpoint___wemustinsistonisthattheymustpayforwhattheyhavedone.
A.whereB.thatCwhatDwhich
为什么选B?
能具体说一下原因吗!感谢!
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