پرسشها با دستهبندی (زبان انگلیسی => زبان انگلیسی => گرامر)
Although Margaret Mead had several assistants during her long investigations of Samoa, the bulk of the research was done by ……… alone.
Over 1900 years ago, ………, who worked in Alexandria, Egypt, classified the stars by their brightness.
The shrinking range poses ……… to Africa’s elephants.
Although Margaret Mead had several assistants during her long investigations of Samoa, the bulk of the research was done by ……… alone.
Not until a student has mastered algebra ……… the principles of geometry, trigonometry, and physics.
In order to remain in existence, ……… must, in the long run, produce something consumers consider useful or desirable.
In that case he'll have to look for a new job .......
The versatility of modern cross-country skiing equipment allows skiers ……… technique to diverse terrain.
……… their differences, the three models resemble ……… in a crucial respect.
Medical research at the cellular level, ……… research on the immune system, has been made possible through twentieth-century advances in techniques of genetic research.
