it is a great pity that susan has to leave .how nice it if she a bit longer.A.would be stayed B.is can stay C.should be stays D.was is able to stay 为什么选A
问题描述：
it is a great pity that susan has to leave .how nice it if she a bit longer.A.would be stayed B.is can stay C.should be stays D.was is able to stay 为什么选A
答