1 . The thief was scared to death ________________ (一想到被发现和枪杀), so he handed himself to the police last Tuesday. (根据汉语提示完成句子)

3 . Another planet ________ (discover) by the end of last year. （用所给词的适当形式填空）

4 . In 1967, the Chinese government formed a team of scientists _____________________(旨在发现新型抗疟疾疗法), and Tu Youyou was among the first researchers chosen.   (根据汉语提示完成句子)

5 . This soon led her _________ (discover) more complex words and changed her thinking process. (所给词的适当形式填空)

6 . 1967年，中国政府组建了一支以探索治疗疟疾新方法为目的的科学家队伍。
In 1967, the Chinese government formed a team of scientists _______ ________ _______ _________ _________ a new treatment for malaria.

8 . By about 6,000 BC, people ________(discover) the best crops to grow and animals to raise.   (所给词的适当形式填空)

9 . In 1967, the Chinese government formed a team of scientists _____________for malaria, and Tu Youyou was among the first researchers chosen.
中国政府成立了一支科学家团队，旨在发现新型抗疟疾疗法，屠呦呦入选首批研究人员。