Not until 1942______a dying patient’s life using penicillin.A、when John Bumstead

游客2024-08-10  8

问题 Not until 1942______a dying patient’s life using penicillin.

选项 A、when John Bumstead and Orvan Hess saved
B、saved John Bumstead and Orvan Hess
C、did John Bumstead and Orvan Hess saved
D、that John Bumstead and Orvan Hess saved

答案 C

解析 句意:直到1942年,John Bumstead和Orvan Hess使用青霉素挽回了一位垂死病人的生命。not until放句首时,主句应该半倒装,即把谓语动词的一部分如助动词或情态动词倒装到主语之前。
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