成人英语三级

单选题As no one in the small village knew nothing about medicine, Mrs. Smith, a former nurse, had to work as a doctor.A knewB nothingC had toD as

题目
单选题
As no one in the small village knew nothing about medicine, Mrs. Smith, a former nurse, had to work as a doctor.
A

knew

B

nothing

C

had to

D

as

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