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

2 . 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。

3 . 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。

4 . The Amazon River, ________ _________ the rainforest gets ________ name, is close to 6,400 kilometres _________ _______—roughly 100 kilometres longer than the Yangtze River.
亚马孙雨林得名于亚马孙河，亚马孙河长约6,400千米， 比长江还长大约100千米。

5 . 因为我喜欢英语而且成绩不错，我的指导老师建议我选修高级文学。
My adviser ________ because I like English and I’m good at it.

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

8 . 仿佛世界末日即将来临!(句型公式：as if引导表语从句)
教材原句：It seemed ________________ the world were coming to an end!