شرکت در آزمون آنلاین زبان انگلیسی 1 - درس 3 | آزمون شماره 673
1-
He has invited me to a restaurant. There's no ................ thing as a free lunch.
2-
The latest scientific ....... into cancer shows that environment is the most important factor in the development of the disease.
3-
The elderly woman with an old stick fell down while she ............. the busy street.
4-
It's easier to write a song and about personal ............ than to talk about them.
5-
The professor said it was imperative that assignments ....... handed in on or before their due date.