试题 试卷
题型：单词拼写（单句） 题类：常考题 难易度：普通
广东省佛山市第一中学2018-2019学年高二上学期英语第一次段考试卷
— Actually. But the scientists say that before a new drug ___ on humans, plenty of studies ______.
—Oh, really? I ____________. I _____________ go and visit him.
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