The children are swimming( ) the river.(填介词)
The children are swimming( ) the river.(填介词)
Children are forbidden ------ in the river.A swimming
Some children are playing in the swimming p________..填什么
the children are swimming in the river对画线部分提问
The boys are swimming in the river
The ducks are swimming in the river.为什么用介词in,而不用on
Please keep the children -----swimming in the sea.填介词和副词
_____ fish are swimming in the river.
They (swim;are swimming)in the river
.Look!They are swimming __________ the river
The children are swimming in the l____.
The children are jumping____(填介词)the wall.意思:孩子