第10题 There used to be some trees by the lake,_________?

第10题 There used to be some trees by the lake,_________? There used to be some trees,______ there? There used to be _________ near the river. There used to be many turtles in the lake.Yes ,but there are there used to be some trees in this field .完成反意疑问句 There used to be a lake near the farm的反义疑问句到底怎么做? — There used to be lots of fish in the lake .— Yes ,but ther .I’m used to (walk) by the lake after supper There used to be many green trees in this area in the past . there used to be a lot of trees around the village,为什么用 didn There was used to be plenty of trees on both sides of the ri There are some trees by the river.改为否定句