1 . 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

2 . 碧空如洗的秋天是用望远镜观察这类老鹰习性的最好时节。(when)(汉译英)

3 . The killer was caught at a pub ________ he was drinking, ________ was a great comfort to us all.

A．which; which

B．where; which

C．where; that

D．that; which

4 . The UN donated $397 million to help victims in Turkey.
The earthquake has killed thousands of people there. (用定语从句合并)

5 . 春节是一个快乐的时机，在此期间我们可以和我们珍惜和关爱的人在一起度过。（occasion引导定语从句）（汉译英）

6 . He regularly checked his secret drawers, _______were stored some precious paintings and jewels. (用适当的词填空)

7 . Monarchs (黑脉金斑蝶) are the only butterflies known to make two-way migrations, as birds do. In the late summer and early fall, the butterflies typically leave southern Canada and northern and central regions of the United States. They make a dangerous trip to Florida and Mexico, _______ the weather is warmer. (用适当的词填空)

8 . There was a Christmas market, ________I bought a sparkly bag for my friend.

A．when

B．what

C．where

D．which

9 . Most skiing competitions of the Winter Olympics were held in areas northwest of Beijing, _______ it’s cold in the winter but often doesn’t snow much. (用适当的词填空)

10 . 在澳大利亚，很多年轻人喜欢冲浪，在这项运动中他们能寻求刺激。
In Australia, many young people like surfing, ________________.