It was raining (when the plane arrived in London).就括号部分提问

It was raining hard when Ben ___to o school (go) When we got home,it was raining.改为一般疑问句 It was raining hard when the plane a___ in Shanghai was,Rose,raining,back,when,it,came连词成句 I ______ a taxi to school when it was raining. It was raining when i got out 改成独立结构 如何理解it was not until midnight when it was raining中when引导什么从句 When i woke up this morning,i found_______ A.it is raining B.it was raining C.the sky was raining为什么C不可以选 When i woke up this morning,i found_______ A.it is raining B.it was raining C.the sky was raining为什么选C不对 it was raining hard___ i was on my way home yesterday空里应填when还是while 为什么? Miss green was going home when suddenly it A rain B rained C was raining It was raining hard when we got to the station（保持原句意思）it was raining hard when we_______ _______ the station. It was raining when the story took place,wasn't it?肯定回答 it was raining是什么时态 It was raining hard 是什么意思 it was raining really hard It _______ heavily when Mary went to the supermarket last nightA rained B rains C was raining D is raining When he got home,it ____hard.A.was rainingB.rainedC.rainsD.is raining请说明为什么