They are (swimming in the river).对画线部分提问
They are (swimming in the river).对画线部分提问
the children are swimming in the river对画线部分提问
the fish are swimming 画线in the river 画线提问
Those ducks are (swimming) in the river.对括号部分提问
They are working in the garen 对画线部分提问 画线的是are working
The fish are swimming in the river.对in the river进行提问
They (swim;are swimming)in the river
he is swimming in the sea(in the sea画线)对画线部分提问
I am swimming in the swimming pool对画线部分提问
They are playing games in the classroom.对画线部分提问:playing game
they are going to the zoo对画线部分提问
They are (sweeping the floor now).对画线部分提问