شرکت در آزمون آنلاین
زبان انگلیسی 1
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زبان انگلیسی 1
| آزمون شماره 9131
The heart is a type of muscle whose primary responsibility is to ..................... blood throughout the circulatory system .
Some people think that a holiday by the sea is …… a holiday in the mountains, but I don’t think so.
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