Can anyone tell me if these sentences are okay? Or if the translations are wrong..

百分之

任务完成百分之八十了。The task is 80% complete

他在考试中取得了百分之八十五的结果。He got/achieved a score of 85% on the exam.

棒

他手拿着一根木棒 . He is holding a wooden club in his hand(s)

你的字写得真棒.  Your handwriting is excellent.

包子

这个包子有什么馅儿的？What filling is in this baozi?

这家饭馆儿的包子味道非常好。 

保护

我们必须保护环境。 We must protect the environment.

在家里的时候我们得保护自己。 We have to protect ourselves in the home.

奶奶很注意保护皮肤. Granny really pays attention to protecting her skin.

保证

我保证说到做到。 I promise I will do as I say.

我们保证我们的产品一年. Our products have a guarantee of one year.

我保证，以后不迟到了。 I promise I won't be late again.

我保证我会从现在开始减少吸烟量。I promise I will start to smoke less from now.

我保证我永远不会和你分手。I promise I will never break up with you.

报名

报名人数已经超过了900。The number of entrants already exceeds 900.

你要报名参加比赛吗？Do you want to sign-up for the competition?

我想报名参加这个月的汉语水平考试。I want to apply for this months HSK

对不起，报名工作今天上午刚结束。I'm sorry, this morning's registration for work has just ended.

有多少学生报名学习这门课？How many students have enrolled for this course？

抱

妈妈抱着孩子.  The mom is hugging the child.

飞机起飞时，我一直抱着前面的椅子不放. When I’m on a plane, I always relentlessly hold the chair in front.

抱歉

真抱歉，本来我该去火车站接你的。I'm really sorry. I originally wanted to meet you at the train station.

女的为什么表示抱歉？Why does the woman feel so sorry?

倍

我们学校的留学生比去年多了一倍。The number of international students in our school has doubled since last year.

在过去的几年里，学校的外教数量增长到了三倍The number of foreign teachers has tripled in the past few years.

本来 

他本来不会说汉语，但住了在中国两年之后，他说的挺好。At first he couldn't speak Chinese, but after living in China for 2 years, he now speaks pretty well.

本来我不想去的，现在是不得不去。Originally, I didn't want to go. Now, I have no choice nut to go.

你并不笨，只是需要更努力。You aren't stupid, you just need to work harder.

我觉得很笨因为我的考试成绩是太差了.I feel very stupid because my exam result was so poor.

比如

这家公司卖很多产品，比如书，杂志，文具等等。 This company sells many things, for eg books, magazines, stationery etc.

你可以做很多事情来减肥，比如做运动，吃健康的食物和不吃糖。 You can do many things to lose weight, eg exercise, eating healthy food and not eating candy.

毕业

当我毕业后，我想找到一份好工作。When I graduate, I want to get a good job

你已经硕士毕业了吧？You've already graduated from your master's?

我毕业于都柏林大学。 I am a graduate of UCD.

他将要三年后毕业。In 3 years, he will graduate.

遍

我已经读了这篇文章很多遍。I have already read this article many times.

你可以再说一遍吗? Can you say it again?