我想搞清楚几道英语选择题

我想搞清楚几道英语选择题
1.If the weather had been better,we could have had a picnic.But it_____all day.
B.rained.C.has rained.
我选的是C.我的想法是had been是过去完成时.所以.应该是知道今天确实是下了一整天雨.所以用完成时的has rained.可是却是选rained.为什么呢.
2.We had an anxious couple of weeks,_____for the results of the experiment.
C,waited.D.waiting.
我选C.
3.Judy is going to marry the sailor she____in Rome last year.
C.has met.A.met.
我选C.因为觉得是完成时.他们去年已经见面了.所以选C.为什么选A呢.
4.He _____as a national hero for winning the first gold medal for his country in the Olympics.
B.was regarded.C.has regared.
我选的是C.同样觉得是完成时.
5.Teenagers _____their health because they play computer games too much.
B.are damaging.C.damaged.
我选C.
6.How can I apply for an online course?
Just fill out this form and we ___ what we can do four you.
C.wii see D.have seen.
我选C.