1 . 如果有必要，你最好查字典。
____________， you'd better refer to the dictionary.

2 . 我不喜欢你嘲笑她的方式。
I don’t like the way ____________ her.

3 . Only after they had discussed the matter for several hours ________ (他们才作出决定). (根据汉语提示完成句子)

4 . John talked with me for about an hour yesterday. Never ________ (我以前从未听过他说那么多话). (根据汉语提示完成句子)

5 . Now, we scientists ________ _________ ______ ______ _______ it is perfectly possible to live and not know.
如今，我们科学家理所当然地认为，生而有所不知是完全有可能的。

6 . In November 1972, through ________ ________ ________, they successfully discovered qinghaosu—the most effective part of the qinghao extract.
1972年11月，经过反复试验，他们成功发现了青蒿素—青蒿提取物中最有效的成分。

7 . When they failed to produce any promising results, Tu _________ _________ the ancient books of traditional Chinese medicine again.
当这些未能取得任何有希望的效果时，屠呦呦就再次查阅中医典籍。

8 . 眼睛不再盯着手机，我们得以真正享受彼此的陪伴。
________ eyes no longer________ on our phones, we had a chance to really enjoy each other’s company.

9 . 陷入这种习惯很容易，戒掉它却很难。
_________ into the habit was easy, but it was difficult to ________ the habit.

10 . 唯有如此，互联网才能成为每个人的发现之地、奇妙之所、灵感之源。
Only in this way _______ the Internet ________a place of discovery, wonder and inspiration for everyone.