1 . The city of Petra, ______ carvings were intricately carved into red sandstone cliffs, was once the capital of the Nabataean Kingdom.

A．where

B．when

C．that

D．what

2 . 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)
_______________________________________________________________________________

3 . 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)

4 . 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, ________________．

5 . 我们必须有保持学校每个角落整洁的良好习惯，在学校里我们和睦相处。
We must have good habits to keep every corner tidy in our school, ________________.

6 . 十年前的一天，他走进了一家咖啡馆,在那里他第一次遇见了他的妻子。
He entered a café one day 10 years ago, ____________________.

7 . 还有，你们将有机会学习如何包饺子，这是中国典型的习俗，我相信你们一定会从中感受到快乐。（汉译英）

8 . 我们班计划5月30号骑自行车去西湖观看龙舟赛，那时全国范围内庆祝端午节。(汉译英)

9 . 他的头很快就在第二层的某个窗户伸出来，在那里除了树他什么也看不见。(from where)
His head soon appeared out of one of the second storey windows, ________________.

10 . ①Nowadays, a nature domain located in Sichuan Province has been set up.
②Pandas can enjoy their life happily there.
→________________________________________________________________________（合并成含有where引导的非限制性定语从句的主从复合句）