______ with air, a life jacket will keep a person afloat.A、It is filledB、Fillin

游客2023-11-21 35

问题 ______ with air, a life jacket will keep a person afloat.

选项 A、It is filled
B、Filling
C、When filled
D、When filling it

答案 C

解析从属分句省略主语时，其逻辑主语应与主句主语一致，本句的主语应该是a life jacket，所以应选择表被动的filled。

转载请注明原文地址:https://tihaiku.com/zcyy/3206812.html

相关试题推荐

随机试题

最新回复(0)

Asthegroupofpersons________togetherinaconversationalknot,eachindivid