شرکت در آزمون آنلاین
زبان انگلیسی 1
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زبان انگلیسی 1
| آزمون شماره 13868
All water companies are under a/an ............................ to improve drinking water standards.
We hope that Iranian scientists can develop a ..................... for this virus soon.
Everybody says, at her ......................... , the words sounded strange.
For him the best ... was having the chance to see his family again.
