It was rain outside哪里错了

It was rain outside哪里错了 It _ (rain) outside. 请翻译：When I was walking outside,it started to rain. and it was snowing outside. It's (rain) hard outside.It's raining hard outside.为什么rain要变成raining It's was rain outside.这句话哪里错了?只能改一处..我们英语老师说是rain 这个地方错了..我觉得很奇怪昂、只能改一处.. It was _(rain)yesteiday It ____(rain)outside.We should stay at home. IT IS ______(RAIN ) OUTSIDE PIACE TAKE AN UMBRELLA It's rain outside,falling from the sky It is rain outside.这句话哪里错了 it was dark outside outside什么词性修饰谁 It was dark outside.outside是作状语还是定语? it was very _________(fog) outside It was noisy outside用as改 It was ____(rain) last summer It was ______(sun)and__________(rain)yesterday Yesterday it was (rain)and (cloud)