شرکت در آزمون آنلاین
زبان انگلیسی 1
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زبان انگلیسی 1
| آزمون شماره 12879
The heart is a type of muscle whose primary responsibility is to ..................... blood throughout the circulatory system .
According to the … news, the river is dirty, so it is not healthy to eat fish from the river.
Which of the following words is defined in the passage?
