how can i say these sentences in simple grammaer and words?

this film takes three hours. 这个电影时长三小时
I could not come to class.(past time) 我上不了课
I prefer to work in the company. 我更想在公司工作
I prefer to work in the company.
I do not have the courage to do it. 我没有这么做的勇气
Our house was a power cut. 我们家停电了
my opinion has changed. 我改主意了
I still have not graduated. 我还没毕业
I stay at home in weekend . 周末我呆在家里
Good luck. 好运
Tour card leader 导游（I'm not sure）
Great Wall of China 长城
I dont work recently. 我最近没工作
please Continue to your work. 继续做你的工作
I do not like to be a housewife. 不想做家庭主妇
I do not need this book. 我不需要这本书
All day 整天
select 选择
Society 社会
Dancer 舞者
I want to try him . 我想让他试试
I want to try this dress. 我想试试这条裙子
make money 赚钱
Other way to do solve this solution 解决问题的其他方法
He is a brave man. 他是个坚强的男人
I have a headache. Maybe have a cold. Should go to the hospital and the see doctor 我有点头疼，可能是感冒了，我该去医院看医生。
Everyone should be careful about safety. 每个人都应该注意安全
Children should not play in the street. 孩子们不该在街道上玩耍
The test result is not bad. 考试结果还行
The problem is the accent of the people of Hong Kong.问题是香港人的口音 
I have not yet decided. 我还没决定
Time is very low.