Chunyun in China

Again, <em>since yesterday</em>, several migrant workers have started their annual trip home. It's considered to be the biggest <em>population</em> flood of move in the world. But <em>they can</em> only stay with their families for a few days--less than a week. Although China has seen a significant economic growth in the past three decades, the phenomenon remains unchanged. In my childhood, to afford the high cost of my education, my father had to work in cities far from our hometown all year round. I wished my father had spent more time with our family. Now, I am repeating the <em>same </em>thing that he did before. 

Why do we stay away from our hometowns? The most obvious reason for this is job opportunities. Young people <em>can</em> <em>hardly</em> get decent jobs in the countryside. In addition, because of the poor welfare system of the society, an ordinary workman cannot afford <em>for </em>his family to live together with him. What a shame. 

The spring festival is seen <em>as </em>the greatest festival in China, like Christmas in the West. And it is also the only chance for us to go home.

If you want to talk strictly about hypotheses then you should use "would". Could is generally used to state possibility, but it's not excluded from the hypothesis classification.

By using "would" in the sentences presented, you're describing the action in a future tense.

If you were to use "could" instead, you'd simply be stating the possibility of the action. 

I'm so lazy.

When I enjoy my holiday, I find <em>that</em> I become an insect; surfing the Internet, watching soap operas as well as playing the guitar. Most of time I don't want to move <em>and </em>just sitting in front of the computer, staring at the screen.
Maybe my most rewarding action is to finding italki. On this website, I find some friends who <em>also</em><em> </em>want to learn English. This language is difficult for me. I can't understand to others clearly. Can you give me some advices?

So sad

I have found a job. I like it, but the job requires me to write an English online application. My English hasn't gotten better; I don't know how to write this.