_news came _an unknown disease was spreading in the area.

_news came _an unknown disease was spreading in the area. not to be left behind are the disease-spreading pests The disease is spreading.All elderly people and all children In the past,celiac disease was considered rare and limited m l was the first one in our class --(work)in the rural area. The reason ______ he was late was unknown The reason ______ he was late was unknown. I was reading books until the teacher came in. 13.I was reading English ___ the teacher came in. （the teacher came in when I was reading)是否正确 thy are going to have the serviceman _an electric fan in the was the curiosity of all mankind to explore the unknown