they they had a global We can use they to talk about a wide group of people, such as an authority or an institution. In such cases, they does not refer to specific people: … Definition of they from the Cambridge Advanced Learner's DictionaryThesaurus © Cambridge University Press
they have a lot of extensive They have _________ a lot of extensive research into renewable energy sources... Dịch: Họ đã làm nhiều nghiên cứu phạm vi rộng vào các nguồn năng lượng tái tạo. - Mở rộng collocation với “research” do/carry out research. The research was carried out by a team of scientists at Edinburgh University
they are conducting a wide Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. They are conducting a wide_____of surveys throughout Viet Nam. A. collection B. range C. selection D. group
