Did it snow____last night?为什么是heavily而不是heavy?

Did it snow____last night?为什么是heavily而不是heavy? It's raining heavily.为什么用heavily 而不是heavy? it is raining as heavily as yesterday 为什么用heavy而不用heavily,两者 大雨为什么是heavy rain 不是heavily rain It rained heavily last night. the box is heavy I cannot carry it 为什么是so,that而不是too,that? It was rainning heavy 还是heavily. 是“How heavily it is snowing!”还是"How heavy it is snowing!" It rining ( ) A.heavy B.heavily C.too heavy it rained heavily的heavily 为什么在后面? Last night,it[ ]〔snow〕heavily. was it rain heavily last night改错