شرکت در آزمون آنلاین
زبان انگلیسی 1
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زبان انگلیسی 1
| آزمون شماره 10077
I have always told my students that it’s perfectly ……… to feel nervous before a test.
Scientists are still searching for ............... of life on other planets in the space.
The underlined word “that” refers to … .
