good storyteller must be able to hold his listeners' curiosity ______ he reaches the end of the story.

2023-05-26

A. when
B. unless
C. after
D. until

参考答案:C

句首为否定或半否定的词语,如 never,hardly,seldom,scarcely,little,at no time,not only,not once等,句子采用部分 倒装的形式,即将谓语的一部分如助动词或情态动词倒装至主语之前。如果句中的谓语没有助动词或情态动词,则需添加助动词do,does或did,并将其置 于主语之前。