____ it to clear up tomorrow .the tourists would climb to the top of the mountain to wait for the sun_____A if ,to raise B were ,to rise C should ,to rise D because,raising为什么不是B?
问题描述：
____ it to clear up tomorrow .the tourists would climb to the top of the mountain to wait for the sun_____
A if ,to raise B were ,to rise C should ,to rise D because,raising
为什么不是B?
答
should it = if it should.
虚拟语气的倒装用法。
原句还原是：The tourists would climb to the top of the mountain to wait for the sun to rise if it should to clear up tomorrow.
例句： If it should rain tomorrow, I might get lost.假如明天下雨的话，我可能会迷路。
如果在虚拟从句中包含有一个助动词、情态动词、动词be或have，可以省略if，并将上类动词前置，成为倒装语序。
如：Were he here now，he would certainly help me．他要是在这里肯定会帮我的忙。
答
我觉得应该是B，因为 were it to clear up= should it clear up
答
答案就应该事B,对将来时的虚拟.
把 it to clear up 中的to去掉了,才可以选C
答
B were , to rise