Complete the sentences using Past Perfect.
a. I went to bed because ... .
b. She was hungry because ... .
c. My mother was worried because ... .
d. They were late because ... .
e. The boy was pleased because ... .
f. He arrived at John's house because ... .
I hadn't slept
he hadn't eaten
I hadn't persuaded her
they hadn't turned on an alarm
he hadn't known a way
John had invited him
1. I went to bed because I had done my homework.
2. She was hungry because she hadn't eaten for seven hours.
3. My mother was worried because our cat had been ill.
4. They were late because they had missed the bus.
5. The boy was pleased because he had been presented an interesting computer game.
6. He arrived at John's house because John had invited him .