A-A+
As no one in the small village (knew) (nothing
问题详情
As no one in the small village (knew) (nothing) about medicine, Mrs. Smith, a for-mer nurse, (had to) work (as) a doctor.
A．knew
B．nothing
C．had to
D．as
参考答案
正确答案：B
解析：改为anything。前面是否定，后面就必须用anything，用nothing就是双重否定了。
