emv指标和dma:It is often cloudy and there are sometimes grey skies for days or weeks.是什么意思

It is often cloudy and there are sometimes grey skies for days or weeks.是什么意思 Once a day,is it too often? It is cloudy today对cloudy改疑问句 it is often cool an ( )in autumn look!It is cloudy. I think it is going to r( ) soon. it is a truth is it a story? he has often talked about how interesting it is. It is often said that ( ) teachers have ( )very easy life. it is not a translation