如果结果不匹配，请 
更多“conj.当……时（）”相关的问题
第9题
When I saw the mess my paper was in, it was obvious that someone______ it.A．was readingB．w
When I saw the mess my paper was in, it was obvious that someone______ it.
A．was reading
B．would have read
C．had been reading
D．had read
第10题
The room is in a terrible mess; it______ cleaned.A．can't have beenB．shouldn't have beenC．m
The room is in a terrible mess; it______ cleaned.
A．can't have been
B．shouldn't have been
C．mustn't have been
D．wouldn't have been
第11题
In face－to－face communication, non－verbal signals are not as important as verbal mess
In face-to-face communication, non-verbal signals are not as important as verbal messages.()
参考答案：错误
