Directions: Translate the following sentences into English, using the word or phrase given

Directions: Translate the following sentences into English, using the word or phrase given in the brackets.
86. 抱怨作业太多是没有用的。（complain）
87. 当她听到这则好消息时，面露喜色。(light)
88. 在作演讲时我很难使自己放轻松。（difficulty， at ease）
89. 我们相信，年轻一代将不会辜负我们的期望。（confident）
90. 自从他被任命为经理以来，他在公司的发展方面起了重要的作用。（part）
86. It is no use complaining about too much homework.
87. Her face lit up with joy when she heard the news.
88. I have difficulty make myself feel at ease when making a speech.
89. We are confident that the younger generation won’t fall short of our expectations. [来源:Z*xx*k.Com]
90. Since he was appointed as manger, he has played an important part in the developement of the company.

(答案→)86. It is no use complaining about too much homework.87. Her face lit up with joy when she heard the news. 88. I have difficulty make myself feel at ease when making a speech.89. We are confident that the younger generation won’t fall short of our expectations. [来源:Z*xx*k.Com]90. Since he was appointed as manger, he has played an important part in the developement of the company. 解析：可联系答.案.网客服索取。

谢谢了