The answers are:
a - 3
b - 4
c - 1
d - 2
a. Two surgeons were sitting down to lunch when one of them made a call on the mobile phone to speak with her daughter who had just returned from school.
b. The boy who won the drawing competition went to the dias on a wheelchair to collect his prize.
c. One of the fastest athletes in the world suffers from chronic asthma.
d. She was not that well-off but had a dream to become an astronaut which she did.