شرکت در آزمون آنلاین زبان انگلیسی 1 - درس 3 | آزمون شماره 11040

Research has shown that workers who work ......... hours are likely to have poorer mental health and lower-quality sleep.

Our teacher always says in the class , " I have hope for the future . I see the ............................... at end of tunnel ."

Nowadays , our young scientists take great positions in the most famous universities and companies because of their ................................... on Nano materials.