شرکت در آزمون آنلاین
زبان انگلیسی 1
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زبان انگلیسی 1
| آزمون شماره 13049
The passage implies that the Silbo wouldn`t have come into existence if it hadn’t been for the … of La Gomera.
It can be understood from the passage that ... .
What is the main idea of the passage?