- I knew you ……………PAINT……… . - How do you know? - Your hands were covered with paint!
had been painting.
Yesterday he was very tired because he ………DIG…………… all day.
had been digging
He ... (loose) much weight by the end of the year.
had lost
I knew that our parents ... (grow) melons in their greenhouse since they bought the house.
had been growing
Brown understood the problems of his agency because he ... (work) for it since 2005.
had been working
She …………STUDY………… English for 5 years before she visited Canada.
had been studying
She ... (learn) “Eugene Onegin” by the autumn.
had learnt
Bob ... (eat up) all the muffins by lunchtime.
had eaten up
When the hunters arrived he ……KILL…… already ………… the animal.
had already killed
We ………COOK…………… all day for the party and by 7 o'clock we still weren't ready.
had been cooking
Julia wanted to sit down as she ... (stand) at work all day long.
had been standing
I knew she …………DO………… the washing because the machine was still working when I got in.
had been doing
I …………FINISH just …………… writing a letter when the door bell rang.
I had just finished writing a letter when the door bell rang.
My sister ... (do) the laundry since early morning.
had been doing
Olivia and Victor ... (chat) via Skype for an hour when the connection broke.
had been chatting
The children …………DO ………… their homework and by 10 o'clock they still ……NOT FINISH……………… it.
had been doing / had not finished
He said he …………NOT EXPECT………… to be attacked by a polar bear.
hadn't expected
They ... (decorate) the New Year tree before the children arrived.
had decorated
She ………SLEEP…………… for 3 hours when we woke her up.
had been sleeping