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 . 导游带我们来到草莓地，在那里我们看到了新鲜诱人的红色草莓。
A guide led us to the strawberry field, ________fresh inviting red strawberries.

7 . 灭绝，一种整个种群被抹除的情况，在地球历史上并不罕见。（汉译英）

8 . 接近那座城镇的时候，首先看到的就是教堂，在那儿能欣赏到美妙的唱诗班。(approach v.) (汉译英)

9 . On Good Friday, ________Christians observe the day, on which Christ died, hot cross buns are sold. （用适当的词填空）

10 . “Jugendfeier“ began in the 19th century, ________awareness of civic practices was increasing.

A．when

B．where

C．what

D．which