For years doctors ___________millions of patients’ lives with .

For years,doctors _________ millions of patients’ lives with the help of microscopes.

For years, doctors ___ millions of patients’s lives with the help of microscopes. A: have saved B: are saving

For years, doctors ________ millions of patients’ lives with the help of microscopes. A: have saved B: are saving C: will save D: are saving

For years,doctors ___________millions of patients’ lives with . A: have saved B: ale saving C: will save D: were saving

5. For years, doctors ______ millions of patients’ lives with the help of microscopes. A: have saved B: are saving C: will save D: were saving

In. our hospital, there are altogether 120 ______. A: woman doctors B: womans doctors C: women doctors D: women's doctors

70（） A: millions B: million C: million of D: millions of

Room 110 on the second floor is the () office. A: doctors B: doctor's C: doctors' D: doctors's

截至2018年9月22日全球有多少genius 客人（） A: 1 Millions B: 10 Millions C: 100 Millions