1 . On the top of the mountain stands an ancient temple which ______ (追溯到) the Tang Dynasty. (根据汉语提示完成句子)

2 . Whenever we are in trouble, we must never ______ (失去信心). (根据汉语提示完成句子)

3 . My teacher ______ (假装已经知道) everything but said nothing about it. (根据汉语提示完成句子)

4 . If you are interested in experiments, I suggest that you ______(报名) this course. (根据汉语提示完成句子)

5 . Don’t talk about it ______ (详细地). Just tell me the result in brief. (根据汉语提示完成句子)

6 . Some students ______ (对……着迷) playing games or chatting online, which destroys their own health. (根据汉语提示完成句子)

9 . During the polar summer of 1910-1911, both teams organized food bases ____________ (为……做准备) their journeys the next year. (根据汉语提示完成句子)

10 . After hundreds of failed experiments, they ____________ (偶然发现了治疗方法) for Cholera. (根据汉语提示完成句子)