2012年湖南高考英语单选题.疑问,

2012年湖南高考英语单选题.疑问,
29.Sorry,I am too busy now.If i ____ time,I would certainly go for an outing with you.
A.have had D.had had C.have D.had
我刚看到这题时也打算选D,可后来再看前面的那句话,我就犹豫了.这里要不要用交叉虚拟语气?也就是选C,“如果我现在有时间”,这样理解可不可以?
31.The lecture,______ at 7:00 pm last night,was followed by an obervation of the moon with telescopes.
A.starting B.being started C.to start D.to be started
我就纠结一个问题,这个演讲是主动开始的吗?.不应该是被……开始的么.
呃,外加一道题.
Once ________ ,Jo devoted her life to looking after the children and being a full-time homemaker.
A.having married B.being married D.marrying D.married
不可以选A吗?
我真是要给这题纠结死了.以前就碰到过这样的题目,结果老师说两种情况下答案是不同的,具体的不记得了,大概是针对devote后面接什么分的两种情况.