Complete this text. For questions 26-30, write one word for each space.
Write your answers only here in this exam booklet.
There is an example at the beginning (0).
Computer mouse
We use it every day. Have you ever wondered (0) aboutthe origin of this small and simple device with two buttons and a scroll wheel?
The computer mouse was invented by Douglas Engelbert, a famous American inventor. He had worked on the prototype for a years before it was ready. It was first shown in 1968 at the Research Centre he worked.
It was called a mouse because its cable looked a tail. The first mouses were used in the 1980s and their frequent colour was white. Today they come in many shapes and colours, but the name is almost the same most languages.
However, it seems to be becoming an endangered species.
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