Переведите предложения с глаголами в Past Indefinite и Pasy Perfect на русский язык:
1. I had finished my work by 4 o'clock. 
2. The students had passed the exams by the 1st of July. 
3. By dinner time our train had arrived at a small station. 
4. They returned to the country which he had left in his childhood. 
5. I remembered that I had left my friend's address on the table. 
6. When I got to Tula, my friend had gone to Moscow. 
7. Tom had already gone home when we arrived at the party. 
8. The house was dirty because nobody had cleaned it for weeks. 
9. We were all very hungry because we had not eaten since the previous night. 
10. They couldn't enter the house because Tom had lost the key.