1) Half an hour had gone by, but the last bus hadn’t come yet. We had to walk home.
2) Mary seems to be very worried about the Chinese exam because she hasn’t learned the texts by heart.
3) Since the basketball match has been postponed, we might as well visit the museum.
4) He stayed in Australia with his parents all the way through WWⅡ.
5) Since I graduated from Nanjing University in 1985, I have kind of lost touch with my classmates.
2. Translate the passage.
It is not easy to keep in touch with friends far away. This is true in my case.
It has been a couple of years since I left my old neighborhood and all the friends there. I have been meaning to write to them but things come up and I just don’t seem to find the time. They are always on my mind, however, and I think I will certainly make an effort to keep up correspondence with them in the future.