·[he put up some signs_(ask)someone for help]有助于回答者给出准确的答案为什么?

he put up some signs____(ask)for help he put up some signs asking for bikes.可以是he put up some signs to ask ·[he put up some signs_(ask)someone for help]有助于回答者给出准确的答案为什么? He also put up some signs asking for old bikes解释 The little boy ( )some English when he was playing with a kid from the US.要选哪个?A.put up B.picked up C.made up. He also put up some signs asking for old bikes.为什么用asking ,用to ask 可 he had not___(put,down,put away,put off,put up )his books [he put up some signs_(ask)someone for help]有助于回答者给出准确的答案为什么用动名词呢?还有是He, put some's back up 是啥意思? They decided put up some signs 错在哪里? We are going to ( ) some pictures on the wall.put on put down put out put up He also put up some signs asking for old bikes.为什么用asking不用to ask?还有waste time doing sth和这个是一个道理吗 He also put up some signs asking for old bikes.中的asking for old bikes是伴随状语还是宾语补足语. he also put up some signs asking for old bikes and这里asking for old bikes 是伴随状语是吗?这里可以改为 to ask Put up put up put up put up ,put out