是The ducks are swimming on the river 还是in the river?是There are some boats on the river还是in the river
人气：252 ℃ 时间：2020-04-23 07:13:26
解答
The ducks are swimming in the river There are some boats on the river是ducks的还是boats的？The ducks are swimming【 in】 the river There are some boats 【on】 the river
