1. We had translated the article by six
o’clock.
2. We had shipped the goods by that
time.
3. By the end of the year he had learnt
to speak English.
4. After the sun had set we decided to
return home.
5. I had finished my work before he
returned.
6. We had not reached the station when
it began to rain.
7. They had not yet loaded the goods
when they received our telegram.