1

He died of a heart-attack while he was proving that could run the Marathon.

PROVE

2

I couldn't understand the problem until the teacher had explained it again.

EXPLAIN

3

Aswas walking home I noticed two guys near my car.

WALK

4

I wasn't comfortable until the doctor. Had extracted the painful tooth.

EXTRACT

5

We couldn't afford a new car because our landlord had increased the rent.

INCREASE

6

I scalded my mouth while I was testing the soup.

SCALD/TEST

7

Can you imagine?! This time yesterday we were catching fish and looking at the sea.

CATCH/LOOK

8

He couldn't come because he had a car accident while he was driving to our house.

HAVE/DRIVE

9

My story proved that I, who had never taken serious exercise for ages, could do then marathon.

PROVE/TAKE

10

He explained that had been running the company for 10 years and they I had never had so many trivial complaints.

RUN/NEVER HAVE

11

It's been two years since I saw my children.

SEE

12

He had been working hard on his report all day but he wrote only 5 pages.

WORK/WRITE

13

I knew she had been reading a lot because her eyes were read.

READ

14

I was signalling a left hand turn, when the vehicle behind went into me.

SIGNAL

15

It look me some time to realize that I had been dialing the wrong number.

TAKE/DIAL