solved with past tense
1. I __________ for three hours so I was really happy when the bus finally arrived.
*
Waiting
Was waiting
waited
Had been waiting
2. We ------------ their house after the dinner had been over.
*
had reached
reached
had been reaching
was reaching
3. While he was working on his laptop, he -------- asleep.
*
felt
fell
fall
fill
4. Ali -----------money from the bank to buy his new house.
*
had borrowed
borrowed
had been borrowing
was borrowing
5. If it --------------------, we would have -------- to the park.
*
had not rained, went
had not rained, gone
had not been raining, gone
had not been raining, went
6. Sarah --------- reading after the teacher ----------- the room.
*
started, entered
had started, had entered
had been, had entered
started, had entered
7. Ahmed -------------the meal before we ---------- there.
*
had cooked, had reached
had been cooking, reached
cooked, had been reaching
cooked, reached
8. It was a Friday morning, it ---------- heavily, I -------- on the bus trying not to fall asleep.
*
had been raining, had been sitting
had rained, had sat
rained, sat
was raining, was sitting
9. I --------- born in Basrah.
*
had
was
were
had been
10. He ------- bad about selling the house because he ------------ it for more than thirty years.
*
felt, had owned
had felt, owned
had felt, had been owning
felt, owned​