Question

all but one were here just now

all but one ( ) here just now
a is b was c were d are
选B吧 单数 just now 刚才 过去时

Answer 1

选C were
just now 刚才,刚刚
这涉及到了主谓一致的问题,主语是All用复数形式were
当主语后有but引出的介词短语时,谓语动词的人称不能受but后面的词的影响,而要和最前面的主语保持一致.
此句中的but one是介词短语做定语修饰All,除了一个的我们.