一道英语的完形填空
问题描述：
一道英语的完形填空
A circus moved from town to town,_________(put)on shows with________(train) animals,acrobats________(do)dificult tricks,and funny,colourful clowns.
正确的答案是putting trained doing
能告诉我为什么这么填吗,依据是什么?特别是第三个,不能填do吗?
答
trained animals 指受过训练的动物,putting,doing在句中是分词用作伴随状语,相当于A circus moved from town to town and put on shows with trained animals.Acrobats did dificult tricks,and funny,colourful clo...