1 . 语言学习是一个复杂的过程，始于出生前。
Language learning is a ________, ________ begins before you are born.

2 . 应该让学生接触外文原著和阅读大师作品，这有利于培养他们的文学品味。
Students ________________ original works and masterpieces, ________________ helps cultivate their good taste in literature.

3 . 庞贝古城，其保存完好的遗址为人们提供了一个无与伦比的机会去窥探维苏威火山灾难前罗马时代的生活，是联合国教科文组织认定的世界文化遗产。
The ancient city of Pompeii, __________well-preserved ruins provide an unparalleled glimpse into Roman life before the catastrophic eruption of Mount Vesuvius, is a UNESCO World Heritage Site.

4 . Everyone knows that the increasing population will definitely result in the lack of energy. (用as引导的定语从句改写)
_______________________________________________________________________________

5 . The selection of astronauts is quite__________________, __________________all the applicants will be interviewed.
航天员的选拔是一个相当复杂的过程, 在此过程中所有的申请者都将接受面试。

6 . 就在那时，他开始思考它们是如何从祖先进化而来的，这有助于他的进化论的产生。(定语从句)
Just at that time he began to think about _______________．

7 . It is suggested that the participants be seated in the playground at 8 a.m. next Saturday. The opening ceremony will be conducted at 8 a.m.(用定语从句合并)
_______________________________________________________________________________

8 . Visitors reached the top of the mountain and from there they had a good view of the beautiful valley.
→Visitors reached the top of the mountain, ________________. (定语从句)

9 . 我们被邀请到当地人的家里做客，在那里我们感受到了他们随性洒脱(free­and­easy)的生活态度。
We were invited to the local people’s homes to be their guests, ________________．

10 . 去年夏天，我和我的父母去参观了新西兰。它位于赤道以南。
Last summer, my parents and I ________________ the south of the equator.