2 . 朋友在你成功时会祝贺你，在你失败时会出现在你面前激励你，在你沮丧时也不会远离你。
Friends will congratulate you when you succeed, ________ when you fail, and don’t ________ when you are depressed.

3 . 歌剧起源于古希腊，它借助歌唱和舞蹈的方式向人们传达故事内容。(定语从句)
Opera dates back to ancient Greece, which uses singing and dancing ________________.

5 . 为此，联合国正呼吁各国团结起来采取措施减少温室气体的排放，多使用诸如风能、太阳能等新能源，建立一个和谐的世界。
For this reason, the United Nations is ________ greenhouse gas emissions, use more new energy such as wind energy and________, and ________.

7 . 这期间我将充分利用这次机会，全力以赴学好每门功课。
During this period, I will ________________ every subject well.

8 . 没有人陪伴，她开始在网上聊天来打发时间。(汉译英)
________________________________________________________________________________________

10 . I often leave early ________________ (seek) the right destinations so I can set up early to avoid missing the moment I am attempting to photograph. (所给词的适当形式填空)