a sign of rain 是什么意思?整句是：DO YOU KNOW A CLOUDY SKY IS NOT ALAWAYS A SIGN OF RAIN.

a sign of rain 是什么意思?整句是：DO YOU KNOW A CLOUDY SKY IS NOT ALAWAYS A SIGN OF RAIN. black c______ are a sign of rain a sign of a learning problem是什么意思? 英语 Black c---- are a sign of rain.（根据首字母填空） breathe a sign of A sign of sign a contract是什么意思 请教It's a sign of affection是什么意思? Clutter is a sign of inactive energy 是什么意思?求解释 Dark clouds are a sign of rain.——这句话正确吗?为什么前面用“are”后面仍用“a sign”? There is hardly ( ) sign of rain.可填some.any Early in the morning there wasn’t any ________ of rain．A.sign B.signal C.notice D.mark sign a letter of commitment give me a sign是什么意思? at the first sign of trouble是什么意思? the rain of bullets是什么意思 The Rainbow is a sign of hope for tomorrow.Whenever a good rain washes the world,是个什么样的句子 which sign tells us the way out of a building? 是什么意思?