A. did
Đáp án C.
Tạm dịch: The development of writing________a huge difference to the workd: Sự phát triển của việc viết________một sự khác biệt rất lớn đối với thế giới
Đáp án đúng là C. make a difference: tạo ra một sự khác biệt.Women coulnd’t study medicine at universities (65) ________ the 19th century and they only began to gain equality with male doctors in the 20th century.
Pick (32) ________ some of the interestingly informative books and search for well-researched materials that can help you grow.
Children, too, especially adolescents, have to (70)_________ with the members of their family in sharing household tasks.