1. Put the verbs in brackets into the correct form:
Paul 1)...........(have) an interesting experience when he was a student. He
2)..........(be) at Bristol University for nine months and he 3)...........(begin) to worry
about money. He 4)..........(know) that, if he wanted to continue his studies, he
5)...........(have to earn some extra cash. "If 16)...........(be) you," his friend said, “I
7)..........(do) some nude modelling for the art school. It's easy work and the models
8).......(pay) quite well. “That's a good idea," said Paul. “I think 19).........(do) that." On
10)......... ( arrive) at the art school for his first session, Paul 11)............(show) to the
dressing room where he 12).........(take off) all his clothes and 13)............(put on) a
robe. Then he entered the studio where about twenty art students 14)............(sit) in
front of an empty chair. He walked up to it, took off his robe and sat down. Some of the
students started 15)...........(giggle) and Paul 16)...........(cannot/understand) why. He
17)...........(sit) there for three minutes when a professor ran into the room. "You
18)...........(make) a mistake," he said. "You are in the wrong room!". He
19)............(enter) the class where the students were supposed 20).........(paint) an
empty chair!​