My sister is determinedshe has made up her mind, nothing can change it. A. ThoughB. On

发布时间：2020-08-17 07:22:16

My sister is determined.      she has made up her mind, nothing can change it.
A. Though
B. Once
C. Unless
D. Until

网友回答

A. Though
(答案→)B. Once
C. Unless
D. Until
解析：“一旦”下定决心，什么也不能改变（她的决心）。once: as soon as, when, 引导时间状语。A项引导让步状语从句；C项引导条件状语从句；D项引导时间状语从句，但是要求主句动词为延续性动词或动词的否定形式。故B项正确。
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