You are signed in to this test from another device. If possible, you should exit the test on the other device before continuing. If you believe this is an error, you should contact your test administrator.
Network Error: Your response was not saved.
Server Error: Your response was not saved.
ماحول اول...3: پانی کہ ذخیرہ اندوزی، 4: پینے کا پانی
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