شرکت در آزمون آنلاین
زبان انگلیسی 2
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درس دوم
| آزمون شماره 1951
According to this dictionary, the information that is only known by one person or a few people and should not be told to others is called a/an ".......................... " ; however , sometimes people share them without having the right to do so.
We weighed up the ............................. advantages of driving them or going by train .