по
i knew she (do) the washing because the machine was still working when i got in.
by 7 o'clock the children (do)their homework and were ready to go to bed

Question

Английский язык: по i knew she (do) the washing because the machine was still working when i got in. by 7 o clock the children (do)their homework and were ready to go to bed

pak2005 · Answer

1. had been doing; 2. had done...

по i knew she (do) the washing because the machine was still working when i got in. by 7 o'clock the children (do)their homework and were ready to go to bed

по
i knew she (do) the washing because the machine was still working when i got in.
by 7 o'clock the children (do)their homework and were ready to go to bed