The lake has f___ overnight but the ice is too thin to skate

The lake has f___ overnight but the ice is too thin to skate The ice is too thin ____ us to skate ____ A for / B to on C the ice is too thin ------ A to skate on it B skating on it 为什么不是the ice is too thin to skate on （it)? The ice is too thin for us to skate on.的同义句（2） The ice is too thin for us to skate on.（改写同义句） The ice is too thin for you to walk on .等于The ice is so thin The ice is too thin.You can't skate on it.改为同义句 don't you think the ice on the lake is too thin(bear)__your Don't you think ice on the lake is too thin to___your weight The ice on the lake is ……（厚的）enough to skate on This ice is too thin to skate on.(保持句意不变) This ice is-------