there is a duck ---- the rever.是用in还是用on呢

There is a duck between two duks. The plant is a dead duck:there is no money the plqn is a dead duck：there is on money There is a duck in front of two ducks. a there duck is the lake in连词成句 There is a duck in front of two ducks.There is a duck between two ducks.There is a duck isThere is a duck in front of two ducks.There is a duck between two ducks.There is a duck behind two ducks.How many ducks are there?的中文意思谁帮我翻译 There is a duck in front of two ducks.There is a duck between two ducks.There is a duck in front of two ducks.There is a duck between two ducks.There is a duck behind two ducks.How many ducks are there?聪明的算出了吗?There are（） 一个包含英语的数学问题There is a duck in front of two ducks.There is a duck between two ducks.There is a duck behind two ducks.How many ducks are there?问：There are ________ There is duck in front of two ducks.There is a duck between two ducks.There is a duck behind two ducks.How many ducks are there?There are IQ小博士There is a duck in front of two ducksThere is a duck between two ducksThere is a duck behind two ducksHow many ducks are there?There are____怎么回答?急. The plan is a dead duck:there is no money 需要翻译 the plan is a dead duck:there is no money英语句意 there is a duck in the water the lion is very happy to see him the duck is for my lunch的意思 There is a duck in the river[改为复数]求求哦 there is a duck in frnot of two ducks的意思 there is a duck ---- the rever.是用in还是用on呢 英语作业（猜谜语）It is not in a house .It is not outside a house.It is part of a house.what is it?There is a duck in front of two ducks.There is a duck between two ducks.There is a duck behind two ducks.How many ducks are there at least? 英语翻译If it walks like a duck,sounds like a duck and looks like a duck,then it is a duck.就是这句话,3Q~