C1 Advanced Reading and Use of English Part 3 Workshop

Some of the greatest (a)   of their day set their minds to coming up with a solution. (SCIENCE)

The development of mobile phones has a (1) surpris (a)   long history.

In 1916, there were tests of mobile phones on some (2) milita (a)   trains

In 1926 public trains between Hamburg and Berlin offered a telephone service to first-class (3) travel (a)  

The mobile phone first appeared in (4) liter (a)   in 1931

In the story, the author (5) descri (a)   , a situation that would have seemed quite fantastical at the time

'A gentleman who rode along the sidewalk in front of them, (6) sudde (a)   stepped off the conveyor belt

'A gentleman who rode along the sidewalk in front of them, suddenly stepped off the conveyor belt, pulled a phone out of his pocket, (7) enter (a)   a number into it and said: 'Gertrude, I'll be an hour late for lunch because I want to go to the laboratory.'

Conveyor belt sidewalks are so far only to be found in some large airports but that type of phone (8) convers (a)   can be heard every day in every city in the world.

What's the negative form of 'wrap'?

(a)