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 . 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, ________________.

4 . 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）

5 . 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)

6 . 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, ________________.

7 . 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）

8 . The old woman will return to her hometown,          she left 30 years ago.

A．that

B．what

C．which

D．how

9 . They are wet all over and their sweat is frequently falling into the soil. The crops grow there.（用with的复合结构和where 引导的定语从句改写）

10 . I walk through the doors into the waiting area,         there's a familiar atmosphere of boredom and tension.

A．which

B．that

C．whose

D．where