1.I can't remember my dreams well, but partly I remember something. I don't have nightmares very often, but I do happen once a month.
2.I often dream of happy days with friends and my future, I used to dream of my past, for example, when I was spending my time when I was 5 years old.
3. Yes, sometimes I had the same nightmares, he was about how someone was running after me and I could not escape.
4.Yes, some dreams in life seem very familiar to me, and it seems that I have already seen it somewhere.
5.Нет ,не знаю
If mother bought a cake, we would have a very nice tea party.
If mother had bought a cake, we would have had a very nice tea party.
2 If we receive a telegram from him, we won't worry.
If we received a telegram from him, we wouldn't worry.
If we had received a telegram from him, we wouldn't have worried.
3 If you don't work systematically, you will fail the exam.
If you didn't work systematically, you would fail the exam.
If you hadn't worked systematically, you would have failed the exam.
4 If I live in Moscow, I will visit the Tretyakov Gallery every year.
If I lived in Moscow, I would visit the Tretyakov Gallery every year.
If I had lived in Moscow, I would have visited the Tretyakov Gallery every year.